BASELINE: Update Chromium to 88.0.4324.208

Change-Id: I3ae87d23e4eff4b4a469685658740a213600c667
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

31 files changed, 3597 insertions, 3753 deletions

diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/README.md b/chromium/third_party/devtools-frontend/src/node_modules/ws/README.md
index e2cc3bd38c8..f36a354bb46 100644
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/README.md
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/README.md
@@ -1,12 +1,12 @@
 # ws: a Node.js WebSocket library
 
-[![Version npm](https://img.shields.io/npm/v/ws.svg)](https://www.npmjs.com/package/ws)
-[![Linux Build](https://img.shields.io/travis/websockets/ws/master.svg)](https://travis-ci.org/websockets/ws)
-[![Windows Build](https://ci.appveyor.com/api/projects/status/github/websockets/ws?branch=master&svg=true)](https://ci.appveyor.com/project/lpinca/ws)
-[![Coverage Status](https://img.shields.io/coveralls/websockets/ws/master.svg)](https://coveralls.io/r/websockets/ws?branch=master)
+[![Version npm](https://img.shields.io/npm/v/ws.svg?logo=npm)](https://www.npmjs.com/package/ws)
+[![Build](https://img.shields.io/travis/websockets/ws/master.svg?logo=travis)](https://travis-ci.com/websockets/ws)
+[![Windows x86 Build](https://img.shields.io/appveyor/ci/lpinca/ws/master.svg?logo=appveyor)](https://ci.appveyor.com/project/lpinca/ws)
+[![Coverage Status](https://img.shields.io/coveralls/websockets/ws/master.svg)](https://coveralls.io/github/websockets/ws)
 
-ws is a simple to use, blazing fast, and thoroughly tested WebSocket client
-and server implementation.
+ws is a simple to use, blazing fast, and thoroughly tested WebSocket client and
+server implementation.
 
 Passes the quite extensive Autobahn test suite: [server][server-report],
 [client][client-report].
@@ -14,40 +14,46 @@ Passes the quite extensive Autobahn test suite: [server][server-report],
 **Note**: This module does not work in the browser. The client in the docs is a
 reference to a back end with the role of a client in the WebSocket
 communication. Browser clients must use the native
-[`WebSocket`](https://developer.mozilla.org/en-US/docs/Web/API/WebSocket) object.
+[`WebSocket`](https://developer.mozilla.org/en-US/docs/Web/API/WebSocket)
+object. To make the same code work seamlessly on Node.js and the browser, you
+can use one of the many wrappers available on npm, like
+[isomorphic-ws](https://github.com/heineiuo/isomorphic-ws).
 
 ## Table of Contents
 
-* [Protocol support](#protocol-support)
-* [Installing](#installing)
-  + [Opt-in for performance and spec compliance](#opt-in-for-performance-and-spec-compliance)
-* [API docs](#api-docs)
-* [WebSocket compression](#websocket-compression)
-* [Usage examples](#usage-examples)
-  + [Sending and receiving text data](#sending-and-receiving-text-data)
-  + [Sending binary data](#sending-binary-data)
-  + [Server example](#server-example)
-  + [Broadcast example](#broadcast-example)
-  + [ExpressJS example](#expressjs-example)
-  + [echo.websocket.org demo](#echowebsocketorg-demo)
-  + [Other examples](#other-examples)
-* [Error handling best practices](#error-handling-best-practices)
-* [FAQ](#faq)
-  + [How to get the IP address of the client?](#how-to-get-the-ip-address-of-the-client)
-  + [How to detect and close broken connections?](#how-to-detect-and-close-broken-connections)
-  + [How to connect via a proxy?](#how-to-connect-via-a-proxy)
-* [Changelog](#changelog)
-* [License](#license)
+- [Protocol support](#protocol-support)
+- [Installing](#installing)
+  - [Opt-in for performance and spec compliance](#opt-in-for-performance-and-spec-compliance)
+- [API docs](#api-docs)
+- [WebSocket compression](#websocket-compression)
+- [Usage examples](#usage-examples)
+  - [Sending and receiving text data](#sending-and-receiving-text-data)
+  - [Sending binary data](#sending-binary-data)
+  - [Simple server](#simple-server)
+  - [External HTTP/S server](#external-https-server)
+  - [Multiple servers sharing a single HTTP/S server](#multiple-servers-sharing-a-single-https-server)
+  - [Client authentication](#client-authentication)
+  - [Server broadcast](#server-broadcast)
+  - [echo.websocket.org demo](#echowebsocketorg-demo)
+  - [Use the Node.js streams API](#use-the-nodejs-streams-api)
+  - [Other examples](#other-examples)
+- [FAQ](#faq)
+  - [How to get the IP address of the client?](#how-to-get-the-ip-address-of-the-client)
+  - [How to detect and close broken connections?](#how-to-detect-and-close-broken-connections)
+  - [How to connect via a proxy?](#how-to-connect-via-a-proxy)
+- [Changelog](#changelog)
+- [License](#license)
 
 ## Protocol support
 
-* **HyBi drafts 07-12** (Use the option `protocolVersion: 8`)
-* **HyBi drafts 13-17** (Current default, alternatively option `protocolVersion: 13`)
+- **HyBi drafts 07-12** (Use the option `protocolVersion: 8`)
+- **HyBi drafts 13-17** (Current default, alternatively option
+  `protocolVersion: 13`)
 
 ## Installing
 
 ```
-npm install --save ws
+npm install ws
 ```
 
 ### Opt-in for performance and spec compliance
@@ -60,24 +66,64 @@ necessarily need to have a C++ compiler installed on your machine.
 - `npm install --save-optional bufferutil`: Allows to efficiently perform
   operations such as masking and unmasking the data payload of the WebSocket
   frames.
-- `npm install --save-optional utf-8-validate`: Allows to efficiently check
-  if a message contains valid UTF-8 as required by the spec.
+- `npm install --save-optional utf-8-validate`: Allows to efficiently check if a
+  message contains valid UTF-8 as required by the spec.
 
 ## API docs
 
-See [`/doc/ws.md`](./doc/ws.md) for Node.js-like docs for the ws classes.
+See [`/doc/ws.md`](./doc/ws.md) for Node.js-like documentation of ws classes and
+utility functions.
 
 ## WebSocket compression
 
-ws supports the [permessage-deflate extension][permessage-deflate] which
-enables the client and server to negotiate a compression algorithm and its
-parameters, and then selectively apply it to the data payloads of each
-WebSocket message.
+ws supports the [permessage-deflate extension][permessage-deflate] which enables
+the client and server to negotiate a compression algorithm and its parameters,
+and then selectively apply it to the data payloads of each WebSocket message.
 
-The extension is disabled by default on the server and enabled by default on
-the client. It adds a significant overhead in terms of performance and memory
+The extension is disabled by default on the server and enabled by default on the
+client. It adds a significant overhead in terms of performance and memory
 consumption so we suggest to enable it only if it is really needed.
 
+Note that Node.js has a variety of issues with high-performance compression,
+where increased concurrency, especially on Linux, can lead to [catastrophic
+memory fragmentation][node-zlib-bug] and slow performance. If you intend to use
+permessage-deflate in production, it is worthwhile to set up a test
+representative of your workload and ensure Node.js/zlib will handle it with
+acceptable performance and memory usage.
+
+Tuning of permessage-deflate can be done via the options defined below. You can
+also use `zlibDeflateOptions` and `zlibInflateOptions`, which is passed directly
+into the creation of [raw deflate/inflate streams][node-zlib-deflaterawdocs].
+
+See [the docs][ws-server-options] for more options.
+
+```js
+const WebSocket = require('ws');
+
+const wss = new WebSocket.Server({
+  port: 8080,
+  perMessageDeflate: {
+    zlibDeflateOptions: {
+      // See zlib defaults.
+      chunkSize: 1024,
+      memLevel: 7,
+      level: 3
+    },
+    zlibInflateOptions: {
+      chunkSize: 10 * 1024
+    },
+    // Other options settable:
+    clientNoContextTakeover: true, // Defaults to negotiated value.
+    serverNoContextTakeover: true, // Defaults to negotiated value.
+    serverMaxWindowBits: 10, // Defaults to negotiated value.
+    // Below options specified as default values.
+    concurrencyLimit: 10, // Limits zlib concurrency for perf.
+    threshold: 1024 // Size (in bytes) below which messages
+    // should not be compressed.
+  }
+});
+```
+
 The client will only use the extension if it is supported and enabled on the
 server. To always disable the extension on the client set the
 `perMessageDeflate` option to `false`.
@@ -126,7 +172,7 @@ ws.on('open', function open() {
 });
 ```
 
-### Server example
+### Simple server
 
 ```js
 const WebSocket = require('ws');
@@ -142,65 +188,140 @@ wss.on('connection', function connection(ws) {
 });
 ```
 
-### Broadcast example
+### External HTTP/S server
 
 ```js
+const fs = require('fs');
+const https = require('https');
 const WebSocket = require('ws');
 
-const wss = new WebSocket.Server({ port: 8080 });
-
-// Broadcast to all.
-wss.broadcast = function broadcast(data) {
-  wss.clients.forEach(function each(client) {
-    if (client.readyState === WebSocket.OPEN) {
-      client.send(data);
-    }
-  });
-};
+const server = https.createServer({
+  cert: fs.readFileSync('/path/to/cert.pem'),
+  key: fs.readFileSync('/path/to/key.pem')
+});
+const wss = new WebSocket.Server({ server });
 
 wss.on('connection', function connection(ws) {
-  ws.on('message', function incoming(data) {
-    // Broadcast to everyone else.
-    wss.clients.forEach(function each(client) {
-      if (client !== ws && client.readyState === WebSocket.OPEN) {
-        client.send(data);
-      }
-    });
+  ws.on('message', function incoming(message) {
+    console.log('received: %s', message);
   });
+
+  ws.send('something');
 });
+
+server.listen(8080);
 ```
 
-### ExpressJS example
+### Multiple servers sharing a single HTTP/S server
 
 ```js
-const express = require('express');
 const http = require('http');
-const url = require('url');
 const WebSocket = require('ws');
+const url = require('url');
 
-const app = express();
+const server = http.createServer();
+const wss1 = new WebSocket.Server({ noServer: true });
+const wss2 = new WebSocket.Server({ noServer: true });
 
-app.use(function (req, res) {
-  res.send({ msg: "hello" });
+wss1.on('connection', function connection(ws) {
+  // ...
 });
 
-const server = http.createServer(app);
-const wss = new WebSocket.Server({ server });
+wss2.on('connection', function connection(ws) {
+  // ...
+});
 
-wss.on('connection', function connection(ws, req) {
-  const location = url.parse(req.url, true);
-  // You might use location.query.access_token to authenticate or share sessions
-  // or req.headers.cookie (see http://stackoverflow.com/a/16395220/151312)
+server.on('upgrade', function upgrade(request, socket, head) {
+  const pathname = url.parse(request.url).pathname;
 
-  ws.on('message', function incoming(message) {
-    console.log('received: %s', message);
+  if (pathname === '/foo') {
+    wss1.handleUpgrade(request, socket, head, function done(ws) {
+      wss1.emit('connection', ws, request);
+    });
+  } else if (pathname === '/bar') {
+    wss2.handleUpgrade(request, socket, head, function done(ws) {
+      wss2.emit('connection', ws, request);
+    });
+  } else {
+    socket.destroy();
+  }
+});
+
+server.listen(8080);
+```
+
+### Client authentication
+
+```js
+const http = require('http');
+const WebSocket = require('ws');
+
+const server = http.createServer();
+const wss = new WebSocket.Server({ noServer: true });
+
+wss.on('connection', function connection(ws, request, client) {
+  ws.on('message', function message(msg) {
+    console.log(`Received message ${msg} from user ${client}`);
+  });
+});
+
+server.on('upgrade', function upgrade(request, socket, head) {
+  // This function is not defined on purpose. Implement it with your own logic.
+  authenticate(request, (err, client) => {
+    if (err || !client) {
+      socket.write('HTTP/1.1 401 Unauthorized\r\n\r\n');
+      socket.destroy();
+      return;
+    }
+
+    wss.handleUpgrade(request, socket, head, function done(ws) {
+      wss.emit('connection', ws, request, client);
+    });
   });
+});
 
-  ws.send('something');
+server.listen(8080);
+```
+
+Also see the provided [example][session-parse-example] using `express-session`.
+
+### Server broadcast
+
+A client WebSocket broadcasting to all connected WebSocket clients, including
+itself.
+
+```js
+const WebSocket = require('ws');
+
+const wss = new WebSocket.Server({ port: 8080 });
+
+wss.on('connection', function connection(ws) {
+  ws.on('message', function incoming(data) {
+    wss.clients.forEach(function each(client) {
+      if (client.readyState === WebSocket.OPEN) {
+        client.send(data);
+      }
+    });
+  });
 });
+```
+
+A client WebSocket broadcasting to every other connected WebSocket clients,
+excluding itself.
+
+```js
+const WebSocket = require('ws');
+
+const wss = new WebSocket.Server({ port: 8080 });
 
-server.listen(8080, function listening() {
-  console.log('Listening on %d', server.address().port);
+wss.on('connection', function connection(ws) {
+  ws.on('message', function incoming(data) {
+    wss.clients.forEach(function each(client) {
+      if (client !== ws && client.readyState === WebSocket.OPEN) {
+        client.send(data);
+      }
+    });
+  });
 });
 ```
 
@@ -231,6 +352,21 @@ ws.on('message', function incoming(data) {
 });
 ```
 
+### Use the Node.js streams API
+
+```js
+const WebSocket = require('ws');
+
+const ws = new WebSocket('wss://echo.websocket.org/', {
+  origin: 'https://websocket.org'
+});
+
+const duplex = WebSocket.createWebSocketStream(ws, { encoding: 'utf8' });
+
+duplex.pipe(process.stdout);
+process.stdin.pipe(duplex);
+```
+
 ### Other examples
 
 For a full example with a browser client communicating with a ws server, see the
@@ -238,27 +374,6 @@ examples folder.
 
 Otherwise, see the test cases.
 
-## Error handling best practices
-
-```js
-// If the WebSocket is closed before the following send is attempted
-ws.send('something');
-
-// Errors (both immediate and async write errors) can be detected in an optional
-// callback. The callback is also the only way of being notified that data has
-// actually been sent.
-ws.send('something', function ack(error) {
-  // If error is not defined, the send has been completed, otherwise the error
-  // object will indicate what failed.
-});
-
-// Immediate errors can also be handled with `try...catch`, but **note** that
-// since sends are inherently asynchronous, socket write failures will *not* be
-// captured when this technique is used.
-try { ws.send('something'); }
-catch (e) { /* handle error */ }
-```
-
 ## FAQ
 
 ### How to get the IP address of the client?
@@ -271,7 +386,7 @@ const WebSocket = require('ws');
 const wss = new WebSocket.Server({ port: 8080 });
 
 wss.on('connection', function connection(ws, req) {
-  const ip = req.connection.remoteAddress;
+  const ip = req.socket.remoteAddress;
 });
 ```
 
@@ -280,14 +395,14 @@ the `X-Forwarded-For` header.
 
 ```js
 wss.on('connection', function connection(ws, req) {
-  const ip = req.headers['x-forwarded-for'];
+  const ip = req.headers['x-forwarded-for'].split(/\s*,\s*/)[0];
 });
 ```
 
 ### How to detect and close broken connections?
 
-Sometimes the link between the server and the client can be interrupted in a
-way that keeps both the server and the client unaware of the broken state of the
+Sometimes the link between the server and the client can be interrupted in a way
+that keeps both the server and the client unaware of the broken state of the
 connection (e.g. when pulling the cord).
 
 In these cases ping messages can be used as a means to verify that the remote
@@ -296,12 +411,14 @@ endpoint is still responsive.
 ```js
 const WebSocket = require('ws');
 
-const wss = new WebSocket.Server({ port: 8080 });
+function noop() {}
 
 function heartbeat() {
   this.isAlive = true;
 }
 
+const wss = new WebSocket.Server({ port: 8080 });
+
 wss.on('connection', function connection(ws) {
   ws.isAlive = true;
   ws.on('pong', heartbeat);
@@ -312,13 +429,45 @@ const interval = setInterval(function ping() {
     if (ws.isAlive === false) return ws.terminate();
 
     ws.isAlive = false;
-    ws.ping('', false, true);
+    ws.ping(noop);
   });
 }, 30000);
+
+wss.on('close', function close() {
+  clearInterval(interval);
+});
 ```
 
-Pong messages are automatically sent in response to ping messages as required
-by the spec.
+Pong messages are automatically sent in response to ping messages as required by
+the spec.
+
+Just like the server example above your clients might as well lose connection
+without knowing it. You might want to add a ping listener on your clients to
+prevent that. A simple implementation would be:
+
+```js
+const WebSocket = require('ws');
+
+function heartbeat() {
+  clearTimeout(this.pingTimeout);
+
+  // Use `WebSocket#terminate()`, which immediately destroys the connection,
+  // instead of `WebSocket#close()`, which waits for the close timer.
+  // Delay should be equal to the interval at which your server
+  // sends out pings plus a conservative assumption of the latency.
+  this.pingTimeout = setTimeout(() => {
+    this.terminate();
+  }, 30000 + 1000);
+}
+
+const client = new WebSocket('wss://echo.websocket.org/');
+
+client.on('open', heartbeat);
+client.on('ping', heartbeat);
+client.on('close', function clear() {
+  clearTimeout(this.pingTimeout);
+});
+```
 
 ### How to connect via a proxy?
 
@@ -333,9 +482,15 @@ We're using the GitHub [releases][changelog] for changelog entries.
 
 [MIT](LICENSE)
 
-[https-proxy-agent]: https://github.com/TooTallNate/node-https-proxy-agent
-[socks-proxy-agent]: https://github.com/TooTallNate/node-socks-proxy-agent
+[changelog]: https://github.com/websockets/ws/releases
 [client-report]: http://websockets.github.io/ws/autobahn/clients/
-[server-report]: http://websockets.github.io/ws/autobahn/servers/
+[https-proxy-agent]: https://github.com/TooTallNate/node-https-proxy-agent
+[node-zlib-bug]: https://github.com/nodejs/node/issues/8871
+[node-zlib-deflaterawdocs]:
+  https://nodejs.org/api/zlib.html#zlib_zlib_createdeflateraw_options
 [permessage-deflate]: https://tools.ietf.org/html/rfc7692
-[changelog]: https://github.com/websockets/ws/releases
+[server-report]: http://websockets.github.io/ws/autobahn/servers/
+[session-parse-example]: ./examples/express-session-parse
+[socks-proxy-agent]: https://github.com/TooTallNate/node-socks-proxy-agent
+[ws-server-options]:
+  https://github.com/websockets/ws/blob/master/doc/ws.md#new-websocketserveroptions-callback
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/browser.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/browser.js
new file mode 100644
index 00000000000..ca4f628ac17
--- /dev/null
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/browser.js
@@ -0,0 +1,8 @@
+'use strict';
+
+module.exports = function () {
+  throw new Error(
+    'ws does not work in the browser. Browser clients must use the native ' +
+      'WebSocket object'
+  );
+};
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/index.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/index.js
index 489e169426e..722c78676ef 100644
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/index.js
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/index.js
@@ -1,15 +1,10 @@
-/*!
- * ws: a node.js websocket client
- * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
- * MIT Licensed
- */
-
 'use strict';
 
-const WebSocket = require('./lib/WebSocket');
+const WebSocket = require('./lib/websocket');
 
-WebSocket.Server = require('./lib/WebSocketServer');
-WebSocket.Receiver = require('./lib/Receiver');
-WebSocket.Sender = require('./lib/Sender');
+WebSocket.createWebSocketStream = require('./lib/stream');
+WebSocket.Server = require('./lib/websocket-server');
+WebSocket.Receiver = require('./lib/receiver');
+WebSocket.Sender = require('./lib/sender');
 
 module.exports = WebSocket;
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/.DS_Store b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/.DS_Store
deleted file mode 100644
index 6cee8b4decb..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/.DS_Store
+++ /dev/null
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/BufferUtil.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/BufferUtil.js
deleted file mode 100644
index 6a35e8f43bc..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/BufferUtil.js
+++ /dev/null
@@ -1,71 +0,0 @@
-/*!
- * ws: a node.js websocket client
- * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
- * MIT Licensed
- */
-
-'use strict';
-
-const safeBuffer = require('safe-buffer');
-
-const Buffer = safeBuffer.Buffer;
-
-/**
- * Merges an array of buffers into a new buffer.
- *
- * @param {Buffer[]} list The array of buffers to concat
- * @param {Number} totalLength The total length of buffers in the list
- * @return {Buffer} The resulting buffer
- * @public
- */
-const concat = (list, totalLength) => {
-  const target = Buffer.allocUnsafe(totalLength);
-  var offset = 0;
-
-  for (var i = 0; i < list.length; i++) {
-    const buf = list[i];
-    buf.copy(target, offset);
-    offset += buf.length;
-  }
-
-  return target;
-};
-
-try {
-  const bufferUtil = require('bufferutil');
-
-  module.exports = Object.assign({ concat }, bufferUtil.BufferUtil || bufferUtil);
-} catch (e) /* istanbul ignore next */ {
-  /**
-   * Masks a buffer using the given mask.
-   *
-   * @param {Buffer} source The buffer to mask
-   * @param {Buffer} mask The mask to use
-   * @param {Buffer} output The buffer where to store the result
-   * @param {Number} offset The offset at which to start writing
-   * @param {Number} length The number of bytes to mask.
-   * @public
-   */
-  const mask = (source, mask, output, offset, length) => {
-    for (var i = 0; i < length; i++) {
-      output[offset + i] = source[i] ^ mask[i & 3];
-    }
-  };
-
-  /**
-   * Unmasks a buffer using the given mask.
-   *
-   * @param {Buffer} buffer The buffer to unmask
-   * @param {Buffer} mask The mask to use
-   * @public
-   */
-  const unmask = (buffer, mask) => {
-    // Required until https://github.com/nodejs/node/issues/9006 is resolved.
-    const length = buffer.length;
-    for (var i = 0; i < length; i++) {
-      buffer[i] ^= mask[i & 3];
-    }
-  };
-
-  module.exports = { concat, mask, unmask };
-}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Constants.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Constants.js
deleted file mode 100644
index 39044146294..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Constants.js
+++ /dev/null
@@ -1,10 +0,0 @@
-'use strict';
-
-const safeBuffer = require('safe-buffer');
-
-const Buffer = safeBuffer.Buffer;
-
-exports.BINARY_TYPES = ['nodebuffer', 'arraybuffer', 'fragments'];
-exports.GUID = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11';
-exports.EMPTY_BUFFER = Buffer.alloc(0);
-exports.NOOP = () => {};
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/ErrorCodes.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/ErrorCodes.js
deleted file mode 100644
index f5155716256..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/ErrorCodes.js
+++ /dev/null
@@ -1,28 +0,0 @@
-/*!
- * ws: a node.js websocket client
- * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
- * MIT Licensed
- */
-
-'use strict';
-
-module.exports = {
-  isValidErrorCode: function (code) {
-    return (code >= 1000 && code <= 1013 && code !== 1004 && code !== 1005 && code !== 1006) ||
-      (code >= 3000 && code <= 4999);
-  },
-  1000: 'normal',
-  1001: 'going away',
-  1002: 'protocol error',
-  1003: 'unsupported data',
-  1004: 'reserved',
-  1005: 'reserved for extensions',
-  1006: 'reserved for extensions',
-  1007: 'inconsistent or invalid data',
-  1008: 'policy violation',
-  1009: 'message too big',
-  1010: 'extension handshake missing',
-  1011: 'an unexpected condition prevented the request from being fulfilled',
-  1012: 'service restart',
-  1013: 'try again later'
-};
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/PerMessageDeflate.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/PerMessageDeflate.js
deleted file mode 100644
index 6ed12a7b7bc..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/PerMessageDeflate.js
+++ /dev/null
@@ -1,507 +0,0 @@
-'use strict';
-
-const safeBuffer = require('safe-buffer');
-const Limiter = require('async-limiter');
-const zlib = require('zlib');
-
-const bufferUtil = require('./BufferUtil');
-
-const Buffer = safeBuffer.Buffer;
-
-const TRAILER = Buffer.from([0x00, 0x00, 0xff, 0xff]);
-const EMPTY_BLOCK = Buffer.from([0x00]);
-
-const kWriteInProgress = Symbol('write-in-progress');
-const kPendingClose = Symbol('pending-close');
-const kTotalLength = Symbol('total-length');
-const kCallback = Symbol('callback');
-const kBuffers = Symbol('buffers');
-const kError = Symbol('error');
-const kOwner = Symbol('owner');
-
-//
-// We limit zlib concurrency, which prevents severe memory fragmentation
-// as documented in https://github.com/nodejs/node/issues/8871#issuecomment-250915913
-// and https://github.com/websockets/ws/issues/1202
-//
-// Intentionally global; it's the global thread pool that's an issue.
-//
-let zlibLimiter;
-
-/**
- * permessage-deflate implementation.
- */
-class PerMessageDeflate {
-  /**
-   * Creates a PerMessageDeflate instance.
-   *
-   * @param {Object} options Configuration options
-   * @param {Boolean} options.serverNoContextTakeover Request/accept disabling
-   *     of server context takeover
-   * @param {Boolean} options.clientNoContextTakeover Advertise/acknowledge
-   *     disabling of client context takeover
-   * @param {(Boolean|Number)} options.serverMaxWindowBits Request/confirm the
-   *     use of a custom server window size
-   * @param {(Boolean|Number)} options.clientMaxWindowBits Advertise support
-   *     for, or request, a custom client window size
-   * @param {Number} options.level The value of zlib's `level` param
-   * @param {Number} options.memLevel The value of zlib's `memLevel` param
-   * @param {Number} options.threshold Size (in bytes) below which messages
-   *     should not be compressed
-   * @param {Number} options.concurrencyLimit The number of concurrent calls to
-   *     zlib
-   * @param {Boolean} isServer Create the instance in either server or client
-   *     mode
-   * @param {Number} maxPayload The maximum allowed message length
-   */
-  constructor (options, isServer, maxPayload) {
-    this._maxPayload = maxPayload | 0;
-    this._options = options || {};
-    this._threshold = this._options.threshold !== undefined
-      ? this._options.threshold
-      : 1024;
-    this._isServer = !!isServer;
-    this._deflate = null;
-    this._inflate = null;
-
-    this.params = null;
-
-    if (!zlibLimiter) {
-      const concurrency = this._options.concurrencyLimit !== undefined
-        ? this._options.concurrencyLimit
-        : 10;
-      zlibLimiter = new Limiter({ concurrency });
-    }
-  }
-
-  /**
-   * @type {String}
-   */
-  static get extensionName () {
-    return 'permessage-deflate';
-  }
-
-  /**
-   * Create extension parameters offer.
-   *
-   * @return {Object} Extension parameters
-   * @public
-   */
-  offer () {
-    const params = {};
-
-    if (this._options.serverNoContextTakeover) {
-      params.server_no_context_takeover = true;
-    }
-    if (this._options.clientNoContextTakeover) {
-      params.client_no_context_takeover = true;
-    }
-    if (this._options.serverMaxWindowBits) {
-      params.server_max_window_bits = this._options.serverMaxWindowBits;
-    }
-    if (this._options.clientMaxWindowBits) {
-      params.client_max_window_bits = this._options.clientMaxWindowBits;
-    } else if (this._options.clientMaxWindowBits == null) {
-      params.client_max_window_bits = true;
-    }
-
-    return params;
-  }
-
-  /**
-   * Accept extension offer.
-   *
-   * @param {Array} paramsList Extension parameters
-   * @return {Object} Accepted configuration
-   * @public
-   */
-  accept (paramsList) {
-    paramsList = this.normalizeParams(paramsList);
-
-    var params;
-    if (this._isServer) {
-      params = this.acceptAsServer(paramsList);
-    } else {
-      params = this.acceptAsClient(paramsList);
-    }
-
-    this.params = params;
-    return params;
-  }
-
-  /**
-   * Releases all resources used by the extension.
-   *
-   * @public
-   */
-  cleanup () {
-    if (this._inflate) {
-      if (this._inflate[kWriteInProgress]) {
-        this._inflate[kPendingClose] = true;
-      } else {
-        this._inflate.close();
-        this._inflate = null;
-      }
-    }
-    if (this._deflate) {
-      if (this._deflate[kWriteInProgress]) {
-        this._deflate[kPendingClose] = true;
-      } else {
-        this._deflate.close();
-        this._deflate = null;
-      }
-    }
-  }
-
-  /**
-   * Accept extension offer from client.
-   *
-   * @param {Array} paramsList Extension parameters
-   * @return {Object} Accepted configuration
-   * @private
-   */
-  acceptAsServer (paramsList) {
-    const accepted = {};
-    const result = paramsList.some((params) => {
-      if (
-        (this._options.serverNoContextTakeover === false &&
-          params.server_no_context_takeover) ||
-        (this._options.serverMaxWindowBits === false &&
-          params.server_max_window_bits) ||
-        (typeof this._options.serverMaxWindowBits === 'number' &&
-          typeof params.server_max_window_bits === 'number' &&
-          this._options.serverMaxWindowBits > params.server_max_window_bits) ||
-        (typeof this._options.clientMaxWindowBits === 'number' &&
-          !params.client_max_window_bits)
-      ) {
-        return;
-      }
-
-      if (
-        this._options.serverNoContextTakeover ||
-        params.server_no_context_takeover
-      ) {
-        accepted.server_no_context_takeover = true;
-      }
-      if (
-        this._options.clientNoContextTakeover ||
-        (this._options.clientNoContextTakeover !== false &&
-          params.client_no_context_takeover)
-      ) {
-        accepted.client_no_context_takeover = true;
-      }
-      if (typeof this._options.serverMaxWindowBits === 'number') {
-        accepted.server_max_window_bits = this._options.serverMaxWindowBits;
-      } else if (typeof params.server_max_window_bits === 'number') {
-        accepted.server_max_window_bits = params.server_max_window_bits;
-      }
-      if (typeof this._options.clientMaxWindowBits === 'number') {
-        accepted.client_max_window_bits = this._options.clientMaxWindowBits;
-      } else if (
-        this._options.clientMaxWindowBits !== false &&
-        typeof params.client_max_window_bits === 'number'
-      ) {
-        accepted.client_max_window_bits = params.client_max_window_bits;
-      }
-      return true;
-    });
-
-    if (!result) throw new Error("Doesn't support the offered configuration");
-
-    return accepted;
-  }
-
-  /**
-   * Accept extension response from server.
-   *
-   * @param {Array} paramsList Extension parameters
-   * @return {Object} Accepted configuration
-   * @private
-   */
-  acceptAsClient (paramsList) {
-    const params = paramsList[0];
-
-    if (
-      this._options.clientNoContextTakeover === false &&
-      params.client_no_context_takeover
-    ) {
-      throw new Error('Invalid value for "client_no_context_takeover"');
-    }
-
-    if (
-      (typeof this._options.clientMaxWindowBits === 'number' &&
-        (!params.client_max_window_bits ||
-          params.client_max_window_bits > this._options.clientMaxWindowBits)) ||
-      (this._options.clientMaxWindowBits === false &&
-        params.client_max_window_bits)
-    ) {
-      throw new Error('Invalid value for "client_max_window_bits"');
-    }
-
-    return params;
-  }
-
-  /**
-   * Normalize extensions parameters.
-   *
-   * @param {Array} paramsList Extension parameters
-   * @return {Array} Normalized extensions parameters
-   * @private
-   */
-  normalizeParams (paramsList) {
-    return paramsList.map((params) => {
-      Object.keys(params).forEach((key) => {
-        var value = params[key];
-        if (value.length > 1) {
-          throw new Error(`Multiple extension parameters for ${key}`);
-        }
-
-        value = value[0];
-
-        switch (key) {
-          case 'server_no_context_takeover':
-          case 'client_no_context_takeover':
-            if (value !== true) {
-              throw new Error(`invalid extension parameter value for ${key} (${value})`);
-            }
-            params[key] = true;
-            break;
-          case 'server_max_window_bits':
-          case 'client_max_window_bits':
-            if (typeof value === 'string') {
-              value = parseInt(value, 10);
-              if (
-                Number.isNaN(value) ||
-                value < zlib.Z_MIN_WINDOWBITS ||
-                value > zlib.Z_MAX_WINDOWBITS
-              ) {
-                throw new Error(`invalid extension parameter value for ${key} (${value})`);
-              }
-            }
-            if (!this._isServer && value === true) {
-              throw new Error(`Missing extension parameter value for ${key}`);
-            }
-            params[key] = value;
-            break;
-          default:
-            throw new Error(`Not defined extension parameter (${key})`);
-        }
-      });
-      return params;
-    });
-  }
-
-  /**
-   * Decompress data. Concurrency limited by async-limiter.
-   *
-   * @param {Buffer} data Compressed data
-   * @param {Boolean} fin Specifies whether or not this is the last fragment
-   * @param {Function} callback Callback
-   * @public
-   */
-  decompress (data, fin, callback) {
-    zlibLimiter.push((done) => {
-      this._decompress(data, fin, (err, result) => {
-        done();
-        callback(err, result);
-      });
-    });
-  }
-
-  /**
-   * Compress data. Concurrency limited by async-limiter.
-   *
-   * @param {Buffer} data Data to compress
-   * @param {Boolean} fin Specifies whether or not this is the last fragment
-   * @param {Function} callback Callback
-   * @public
-   */
-  compress (data, fin, callback) {
-    zlibLimiter.push((done) => {
-      this._compress(data, fin, (err, result) => {
-        done();
-        callback(err, result);
-      });
-    });
-  }
-
-  /**
-   * Decompress data.
-   *
-   * @param {Buffer} data Compressed data
-   * @param {Boolean} fin Specifies whether or not this is the last fragment
-   * @param {Function} callback Callback
-   * @private
-   */
-  _decompress (data, fin, callback) {
-    const endpoint = this._isServer ? 'client' : 'server';
-
-    if (!this._inflate) {
-      const key = `${endpoint}_max_window_bits`;
-      const windowBits = typeof this.params[key] !== 'number'
-        ? zlib.Z_DEFAULT_WINDOWBITS
-        : this.params[key];
-
-      this._inflate = zlib.createInflateRaw({ windowBits });
-      this._inflate[kTotalLength] = 0;
-      this._inflate[kBuffers] = [];
-      this._inflate[kOwner] = this;
-      this._inflate.on('error', inflateOnError);
-      this._inflate.on('data', inflateOnData);
-    }
-
-    this._inflate[kCallback] = callback;
-    this._inflate[kWriteInProgress] = true;
-
-    this._inflate.write(data);
-    if (fin) this._inflate.write(TRAILER);
-
-    this._inflate.flush(() => {
-      const err = this._inflate[kError];
-
-      if (err) {
-        this._inflate.close();
-        this._inflate = null;
-        callback(err);
-        return;
-      }
-
-      const data = bufferUtil.concat(
-        this._inflate[kBuffers],
-        this._inflate[kTotalLength]
-      );
-
-      if (
-        (fin && this.params[`${endpoint}_no_context_takeover`]) ||
-        this._inflate[kPendingClose]
-      ) {
-        this._inflate.close();
-        this._inflate = null;
-      } else {
-        this._inflate[kWriteInProgress] = false;
-        this._inflate[kTotalLength] = 0;
-        this._inflate[kBuffers] = [];
-      }
-
-      callback(null, data);
-    });
-  }
-
-  /**
-   * Compress data.
-   *
-   * @param {Buffer} data Data to compress
-   * @param {Boolean} fin Specifies whether or not this is the last fragment
-   * @param {Function} callback Callback
-   * @private
-   */
-  _compress (data, fin, callback) {
-    if (!data || data.length === 0) {
-      process.nextTick(callback, null, EMPTY_BLOCK);
-      return;
-    }
-
-    const endpoint = this._isServer ? 'server' : 'client';
-
-    if (!this._deflate) {
-      const key = `${endpoint}_max_window_bits`;
-      const windowBits = typeof this.params[key] !== 'number'
-        ? zlib.Z_DEFAULT_WINDOWBITS
-        : this.params[key];
-
-      this._deflate = zlib.createDeflateRaw({
-        memLevel: this._options.memLevel,
-        level: this._options.level,
-        flush: zlib.Z_SYNC_FLUSH,
-        windowBits
-      });
-
-      this._deflate[kTotalLength] = 0;
-      this._deflate[kBuffers] = [];
-
-      //
-      // `zlib.DeflateRaw` emits an `'error'` event only when an attempt to use
-      // it is made after it has already been closed. This cannot happen here,
-      // so we only add a listener for the `'data'` event.
-      //
-      this._deflate.on('data', deflateOnData);
-    }
-
-    this._deflate[kWriteInProgress] = true;
-
-    this._deflate.write(data);
-    this._deflate.flush(zlib.Z_SYNC_FLUSH, () => {
-      var data = bufferUtil.concat(
-        this._deflate[kBuffers],
-        this._deflate[kTotalLength]
-      );
-
-      if (fin) data = data.slice(0, data.length - 4);
-
-      if (
-        (fin && this.params[`${endpoint}_no_context_takeover`]) ||
-        this._deflate[kPendingClose]
-      ) {
-        this._deflate.close();
-        this._deflate = null;
-      } else {
-        this._deflate[kWriteInProgress] = false;
-        this._deflate[kTotalLength] = 0;
-        this._deflate[kBuffers] = [];
-      }
-
-      callback(null, data);
-    });
-  }
-}
-
-module.exports = PerMessageDeflate;
-
-/**
- * The listener of the `zlib.DeflateRaw` stream `'data'` event.
- *
- * @param {Buffer} chunk A chunk of data
- * @private
- */
-function deflateOnData (chunk) {
-  this[kBuffers].push(chunk);
-  this[kTotalLength] += chunk.length;
-}
-
-/**
- * The listener of the `zlib.InflateRaw` stream `'data'` event.
- *
- * @param {Buffer} chunk A chunk of data
- * @private
- */
-function inflateOnData (chunk) {
-  this[kTotalLength] += chunk.length;
-
-  if (
-    this[kOwner]._maxPayload < 1 ||
-    this[kTotalLength] <= this[kOwner]._maxPayload
-  ) {
-    this[kBuffers].push(chunk);
-    return;
-  }
-
-  this[kError] = new Error('max payload size exceeded');
-  this[kError].closeCode = 1009;
-  this.removeListener('data', inflateOnData);
-  this.reset();
-}
-
-/**
- * The listener of the `zlib.InflateRaw` stream `'error'` event.
- *
- * @param {Error} err The emitted error
- * @private
- */
-function inflateOnError (err) {
-  //
-  // There is no need to call `Zlib#close()` as the handle is automatically
-  // closed when an error is emitted.
-  //
-  this[kOwner]._inflate = null;
-  this[kCallback](err);
-}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Receiver.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Receiver.js
deleted file mode 100644
index 91196706c19..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Receiver.js
+++ /dev/null
@@ -1,553 +0,0 @@
-/*!
- * ws: a node.js websocket client
- * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
- * MIT Licensed
- */
-
-'use strict';
-
-const safeBuffer = require('safe-buffer');
-
-const PerMessageDeflate = require('./PerMessageDeflate');
-const isValidUTF8 = require('./Validation');
-const bufferUtil = require('./BufferUtil');
-const ErrorCodes = require('./ErrorCodes');
-const constants = require('./Constants');
-
-const Buffer = safeBuffer.Buffer;
-
-const GET_INFO = 0;
-const GET_PAYLOAD_LENGTH_16 = 1;
-const GET_PAYLOAD_LENGTH_64 = 2;
-const GET_MASK = 3;
-const GET_DATA = 4;
-const INFLATING = 5;
-
-/**
- * HyBi Receiver implementation.
- */
-class Receiver {
-  /**
-   * Creates a Receiver instance.
-   *
-   * @param {Object} extensions An object containing the negotiated extensions
-   * @param {Number} maxPayload The maximum allowed message length
-   * @param {String} binaryType The type for binary data
-   */
-  constructor (extensions, maxPayload, binaryType) {
-    this._binaryType = binaryType || constants.BINARY_TYPES[0];
-    this._extensions = extensions || {};
-    this._maxPayload = maxPayload | 0;
-
-    this._bufferedBytes = 0;
-    this._buffers = [];
-
-    this._compressed = false;
-    this._payloadLength = 0;
-    this._fragmented = 0;
-    this._masked = false;
-    this._fin = false;
-    this._mask = null;
-    this._opcode = 0;
-
-    this._totalPayloadLength = 0;
-    this._messageLength = 0;
-    this._fragments = [];
-
-    this._cleanupCallback = null;
-    this._hadError = false;
-    this._dead = false;
-    this._loop = false;
-
-    this.onmessage = null;
-    this.onclose = null;
-    this.onerror = null;
-    this.onping = null;
-    this.onpong = null;
-
-    this._state = GET_INFO;
-  }
-
-  /**
-   * Consumes bytes from the available buffered data.
-   *
-   * @param {Number} bytes The number of bytes to consume
-   * @return {Buffer} Consumed bytes
-   * @private
-   */
-  readBuffer (bytes) {
-    var offset = 0;
-    var dst;
-    var l;
-
-    this._bufferedBytes -= bytes;
-
-    if (bytes === this._buffers[0].length) return this._buffers.shift();
-
-    if (bytes < this._buffers[0].length) {
-      dst = this._buffers[0].slice(0, bytes);
-      this._buffers[0] = this._buffers[0].slice(bytes);
-      return dst;
-    }
-
-    dst = Buffer.allocUnsafe(bytes);
-
-    while (bytes > 0) {
-      l = this._buffers[0].length;
-
-      if (bytes >= l) {
-        this._buffers[0].copy(dst, offset);
-        offset += l;
-        this._buffers.shift();
-      } else {
-        this._buffers[0].copy(dst, offset, 0, bytes);
-        this._buffers[0] = this._buffers[0].slice(bytes);
-      }
-
-      bytes -= l;
-    }
-
-    return dst;
-  }
-
-  /**
-   * Checks if the number of buffered bytes is bigger or equal than `n` and
-   * calls `cleanup` if necessary.
-   *
-   * @param {Number} n The number of bytes to check against
-   * @return {Boolean} `true` if `bufferedBytes >= n`, else `false`
-   * @private
-   */
-  hasBufferedBytes (n) {
-    if (this._bufferedBytes >= n) return true;
-
-    this._loop = false;
-    if (this._dead) this.cleanup(this._cleanupCallback);
-    return false;
-  }
-
-  /**
-   * Adds new data to the parser.
-   *
-   * @public
-   */
-  add (data) {
-    if (this._dead) return;
-
-    this._bufferedBytes += data.length;
-    this._buffers.push(data);
-    this.startLoop();
-  }
-
-  /**
-   * Starts the parsing loop.
-   *
-   * @private
-   */
-  startLoop () {
-    this._loop = true;
-
-    while (this._loop) {
-      switch (this._state) {
-        case GET_INFO:
-          this.getInfo();
-          break;
-        case GET_PAYLOAD_LENGTH_16:
-          this.getPayloadLength16();
-          break;
-        case GET_PAYLOAD_LENGTH_64:
-          this.getPayloadLength64();
-          break;
-        case GET_MASK:
-          this.getMask();
-          break;
-        case GET_DATA:
-          this.getData();
-          break;
-        default: // `INFLATING`
-          this._loop = false;
-      }
-    }
-  }
-
-  /**
-   * Reads the first two bytes of a frame.
-   *
-   * @private
-   */
-  getInfo () {
-    if (!this.hasBufferedBytes(2)) return;
-
-    const buf = this.readBuffer(2);
-
-    if ((buf[0] & 0x30) !== 0x00) {
-      this.error(new Error('RSV2 and RSV3 must be clear'), 1002);
-      return;
-    }
-
-    const compressed = (buf[0] & 0x40) === 0x40;
-
-    if (compressed && !this._extensions[PerMessageDeflate.extensionName]) {
-      this.error(new Error('RSV1 must be clear'), 1002);
-      return;
-    }
-
-    this._fin = (buf[0] & 0x80) === 0x80;
-    this._opcode = buf[0] & 0x0f;
-    this._payloadLength = buf[1] & 0x7f;
-
-    if (this._opcode === 0x00) {
-      if (compressed) {
-        this.error(new Error('RSV1 must be clear'), 1002);
-        return;
-      }
-
-      if (!this._fragmented) {
-        this.error(new Error(`invalid opcode: ${this._opcode}`), 1002);
-        return;
-      } else {
-        this._opcode = this._fragmented;
-      }
-    } else if (this._opcode === 0x01 || this._opcode === 0x02) {
-      if (this._fragmented) {
-        this.error(new Error(`invalid opcode: ${this._opcode}`), 1002);
-        return;
-      }
-
-      this._compressed = compressed;
-    } else if (this._opcode > 0x07 && this._opcode < 0x0b) {
-      if (!this._fin) {
-        this.error(new Error('FIN must be set'), 1002);
-        return;
-      }
-
-      if (compressed) {
-        this.error(new Error('RSV1 must be clear'), 1002);
-        return;
-      }
-
-      if (this._payloadLength > 0x7d) {
-        this.error(new Error('invalid payload length'), 1002);
-        return;
-      }
-    } else {
-      this.error(new Error(`invalid opcode: ${this._opcode}`), 1002);
-      return;
-    }
-
-    if (!this._fin && !this._fragmented) this._fragmented = this._opcode;
-
-    this._masked = (buf[1] & 0x80) === 0x80;
-
-    if (this._payloadLength === 126) this._state = GET_PAYLOAD_LENGTH_16;
-    else if (this._payloadLength === 127) this._state = GET_PAYLOAD_LENGTH_64;
-    else this.haveLength();
-  }
-
-  /**
-   * Gets extended payload length (7+16).
-   *
-   * @private
-   */
-  getPayloadLength16 () {
-    if (!this.hasBufferedBytes(2)) return;
-
-    this._payloadLength = this.readBuffer(2).readUInt16BE(0, true);
-    this.haveLength();
-  }
-
-  /**
-   * Gets extended payload length (7+64).
-   *
-   * @private
-   */
-  getPayloadLength64 () {
-    if (!this.hasBufferedBytes(8)) return;
-
-    const buf = this.readBuffer(8);
-    const num = buf.readUInt32BE(0, true);
-
-    //
-    // The maximum safe integer in JavaScript is 2^53 - 1. An error is returned
-    // if payload length is greater than this number.
-    //
-    if (num > Math.pow(2, 53 - 32) - 1) {
-      this.error(new Error('max payload size exceeded'), 1009);
-      return;
-    }
-
-    this._payloadLength = (num * Math.pow(2, 32)) + buf.readUInt32BE(4, true);
-    this.haveLength();
-  }
-
-  /**
-   * Payload length has been read.
-   *
-   * @private
-   */
-  haveLength () {
-    if (this._opcode < 0x08 && this.maxPayloadExceeded(this._payloadLength)) {
-      return;
-    }
-
-    if (this._masked) this._state = GET_MASK;
-    else this._state = GET_DATA;
-  }
-
-  /**
-   * Reads mask bytes.
-   *
-   * @private
-   */
-  getMask () {
-    if (!this.hasBufferedBytes(4)) return;
-
-    this._mask = this.readBuffer(4);
-    this._state = GET_DATA;
-  }
-
-  /**
-   * Reads data bytes.
-   *
-   * @private
-   */
-  getData () {
-    var data = constants.EMPTY_BUFFER;
-
-    if (this._payloadLength) {
-      if (!this.hasBufferedBytes(this._payloadLength)) return;
-
-      data = this.readBuffer(this._payloadLength);
-      if (this._masked) bufferUtil.unmask(data, this._mask);
-    }
-
-    if (this._opcode > 0x07) {
-      this.controlMessage(data);
-    } else if (this._compressed) {
-      this._state = INFLATING;
-      this.decompress(data);
-    } else if (this.pushFragment(data)) {
-      this.dataMessage();
-    }
-  }
-
-  /**
-   * Decompresses data.
-   *
-   * @param {Buffer} data Compressed data
-   * @private
-   */
-  decompress (data) {
-    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];
-
-    perMessageDeflate.decompress(data, this._fin, (err, buf) => {
-      if (err) {
-        this.error(err, err.closeCode === 1009 ? 1009 : 1007);
-        return;
-      }
-
-      if (this.pushFragment(buf)) this.dataMessage();
-      this.startLoop();
-    });
-  }
-
-  /**
-   * Handles a data message.
-   *
-   * @private
-   */
-  dataMessage () {
-    if (this._fin) {
-      const messageLength = this._messageLength;
-      const fragments = this._fragments;
-
-      this._totalPayloadLength = 0;
-      this._messageLength = 0;
-      this._fragmented = 0;
-      this._fragments = [];
-
-      if (this._opcode === 2) {
-        var data;
-
-        if (this._binaryType === 'nodebuffer') {
-          data = toBuffer(fragments, messageLength);
-        } else if (this._binaryType === 'arraybuffer') {
-          data = toArrayBuffer(toBuffer(fragments, messageLength));
-        } else {
-          data = fragments;
-        }
-
-        this.onmessage(data);
-      } else {
-        const buf = toBuffer(fragments, messageLength);
-
-        if (!isValidUTF8(buf)) {
-          this.error(new Error('invalid utf8 sequence'), 1007);
-          return;
-        }
-
-        this.onmessage(buf.toString());
-      }
-    }
-
-    this._state = GET_INFO;
-  }
-
-  /**
-   * Handles a control message.
-   *
-   * @param {Buffer} data Data to handle
-   * @private
-   */
-  controlMessage (data) {
-    if (this._opcode === 0x08) {
-      if (data.length === 0) {
-        this.onclose(1000, '');
-        this._loop = false;
-        this.cleanup(this._cleanupCallback);
-      } else if (data.length === 1) {
-        this.error(new Error('invalid payload length'), 1002);
-      } else {
-        const code = data.readUInt16BE(0, true);
-
-        if (!ErrorCodes.isValidErrorCode(code)) {
-          this.error(new Error(`invalid status code: ${code}`), 1002);
-          return;
-        }
-
-        const buf = data.slice(2);
-
-        if (!isValidUTF8(buf)) {
-          this.error(new Error('invalid utf8 sequence'), 1007);
-          return;
-        }
-
-        this.onclose(code, buf.toString());
-        this._loop = false;
-        this.cleanup(this._cleanupCallback);
-      }
-
-      return;
-    }
-
-    if (this._opcode === 0x09) this.onping(data);
-    else this.onpong(data);
-
-    this._state = GET_INFO;
-  }
-
-  /**
-   * Handles an error.
-   *
-   * @param {Error} err The error
-   * @param {Number} code Close code
-   * @private
-   */
-  error (err, code) {
-    this.onerror(err, code);
-    this._hadError = true;
-    this._loop = false;
-    this.cleanup(this._cleanupCallback);
-  }
-
-  /**
-   * Checks payload size, disconnects socket when it exceeds `maxPayload`.
-   *
-   * @param {Number} length Payload length
-   * @private
-   */
-  maxPayloadExceeded (length) {
-    if (length === 0 || this._maxPayload < 1) return false;
-
-    const fullLength = this._totalPayloadLength + length;
-
-    if (fullLength <= this._maxPayload) {
-      this._totalPayloadLength = fullLength;
-      return false;
-    }
-
-    this.error(new Error('max payload size exceeded'), 1009);
-    return true;
-  }
-
-  /**
-   * Appends a fragment in the fragments array after checking that the sum of
-   * fragment lengths does not exceed `maxPayload`.
-   *
-   * @param {Buffer} fragment The fragment to add
-   * @return {Boolean} `true` if `maxPayload` is not exceeded, else `false`
-   * @private
-   */
-  pushFragment (fragment) {
-    if (fragment.length === 0) return true;
-
-    const totalLength = this._messageLength + fragment.length;
-
-    if (this._maxPayload < 1 || totalLength <= this._maxPayload) {
-      this._messageLength = totalLength;
-      this._fragments.push(fragment);
-      return true;
-    }
-
-    this.error(new Error('max payload size exceeded'), 1009);
-    return false;
-  }
-
-  /**
-   * Releases resources used by the receiver.
-   *
-   * @param {Function} cb Callback
-   * @public
-   */
-  cleanup (cb) {
-    this._dead = true;
-
-    if (!this._hadError && (this._loop || this._state === INFLATING)) {
-      this._cleanupCallback = cb;
-    } else {
-      this._extensions = null;
-      this._fragments = null;
-      this._buffers = null;
-      this._mask = null;
-
-      this._cleanupCallback = null;
-      this.onmessage = null;
-      this.onclose = null;
-      this.onerror = null;
-      this.onping = null;
-      this.onpong = null;
-
-      if (cb) cb();
-    }
-  }
-}
-
-module.exports = Receiver;
-
-/**
- * Makes a buffer from a list of fragments.
- *
- * @param {Buffer[]} fragments The list of fragments composing the message
- * @param {Number} messageLength The length of the message
- * @return {Buffer}
- * @private
- */
-function toBuffer (fragments, messageLength) {
-  if (fragments.length === 1) return fragments[0];
-  if (fragments.length > 1) return bufferUtil.concat(fragments, messageLength);
-  return constants.EMPTY_BUFFER;
-}
-
-/**
- * Converts a buffer to an `ArrayBuffer`.
- *
- * @param {Buffer} The buffer to convert
- * @return {ArrayBuffer} Converted buffer
- */
-function toArrayBuffer (buf) {
-  if (buf.byteOffset === 0 && buf.byteLength === buf.buffer.byteLength) {
-    return buf.buffer;
-  }
-
-  return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);
-}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Sender.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Sender.js
deleted file mode 100644
index 046a0e1d4c5..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Sender.js
+++ /dev/null
@@ -1,412 +0,0 @@
-/*!
- * ws: a node.js websocket client
- * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
- * MIT Licensed
- */
-
-'use strict';
-
-const safeBuffer = require('safe-buffer');
-const crypto = require('crypto');
-
-const PerMessageDeflate = require('./PerMessageDeflate');
-const bufferUtil = require('./BufferUtil');
-const ErrorCodes = require('./ErrorCodes');
-const constants = require('./Constants');
-
-const Buffer = safeBuffer.Buffer;
-
-/**
- * HyBi Sender implementation.
- */
-class Sender {
-  /**
-   * Creates a Sender instance.
-   *
-   * @param {net.Socket} socket The connection socket
-   * @param {Object} extensions An object containing the negotiated extensions
-   */
-  constructor (socket, extensions) {
-    this._extensions = extensions || {};
-    this._socket = socket;
-
-    this._firstFragment = true;
-    this._compress = false;
-
-    this._bufferedBytes = 0;
-    this._deflating = false;
-    this._queue = [];
-  }
-
-  /**
-   * Frames a piece of data according to the HyBi WebSocket protocol.
-   *
-   * @param {Buffer} data The data to frame
-   * @param {Object} options Options object
-   * @param {Number} options.opcode The opcode
-   * @param {Boolean} options.readOnly Specifies whether `data` can be modified
-   * @param {Boolean} options.fin Specifies whether or not to set the FIN bit
-   * @param {Boolean} options.mask Specifies whether or not to mask `data`
-   * @param {Boolean} options.rsv1 Specifies whether or not to set the RSV1 bit
-   * @return {Buffer[]} The framed data as a list of `Buffer` instances
-   * @public
-   */
-  static frame (data, options) {
-    const merge = data.length < 1024 || (options.mask && options.readOnly);
-    var offset = options.mask ? 6 : 2;
-    var payloadLength = data.length;
-
-    if (data.length >= 65536) {
-      offset += 8;
-      payloadLength = 127;
-    } else if (data.length > 125) {
-      offset += 2;
-      payloadLength = 126;
-    }
-
-    const target = Buffer.allocUnsafe(merge ? data.length + offset : offset);
-
-    target[0] = options.fin ? options.opcode | 0x80 : options.opcode;
-    if (options.rsv1) target[0] |= 0x40;
-
-    if (payloadLength === 126) {
-      target.writeUInt16BE(data.length, 2, true);
-    } else if (payloadLength === 127) {
-      target.writeUInt32BE(0, 2, true);
-      target.writeUInt32BE(data.length, 6, true);
-    }
-
-    if (!options.mask) {
-      target[1] = payloadLength;
-      if (merge) {
-        data.copy(target, offset);
-        return [target];
-      }
-
-      return [target, data];
-    }
-
-    const mask = crypto.randomBytes(4);
-
-    target[1] = payloadLength | 0x80;
-    target[offset - 4] = mask[0];
-    target[offset - 3] = mask[1];
-    target[offset - 2] = mask[2];
-    target[offset - 1] = mask[3];
-
-    if (merge) {
-      bufferUtil.mask(data, mask, target, offset, data.length);
-      return [target];
-    }
-
-    bufferUtil.mask(data, mask, data, 0, data.length);
-    return [target, data];
-  }
-
-  /**
-   * Sends a close message to the other peer.
-   *
-   * @param {(Number|undefined)} code The status code component of the body
-   * @param {String} data The message component of the body
-   * @param {Boolean} mask Specifies whether or not to mask the message
-   * @param {Function} cb Callback
-   * @public
-   */
-  close (code, data, mask, cb) {
-    var buf;
-
-    if (code === undefined) {
-      code = 1000;
-    } else if (typeof code !== 'number' || !ErrorCodes.isValidErrorCode(code)) {
-      throw new Error('first argument must be a valid error code number');
-    }
-
-    if (data === undefined || data === '') {
-      if (code === 1000) {
-        buf = constants.EMPTY_BUFFER;
-      } else {
-        buf = Buffer.allocUnsafe(2);
-        buf.writeUInt16BE(code, 0, true);
-      }
-    } else {
-      buf = Buffer.allocUnsafe(2 + Buffer.byteLength(data));
-      buf.writeUInt16BE(code, 0, true);
-      buf.write(data, 2);
-    }
-
-    if (this._deflating) {
-      this.enqueue([this.doClose, buf, mask, cb]);
-    } else {
-      this.doClose(buf, mask, cb);
-    }
-  }
-
-  /**
-   * Frames and sends a close message.
-   *
-   * @param {Buffer} data The message to send
-   * @param {Boolean} mask Specifies whether or not to mask `data`
-   * @param {Function} cb Callback
-   * @private
-   */
-  doClose (data, mask, cb) {
-    this.sendFrame(Sender.frame(data, {
-      fin: true,
-      rsv1: false,
-      opcode: 0x08,
-      mask,
-      readOnly: false
-    }), cb);
-  }
-
-  /**
-   * Sends a ping message to the other peer.
-   *
-   * @param {*} data The message to send
-   * @param {Boolean} mask Specifies whether or not to mask `data`
-   * @public
-   */
-  ping (data, mask) {
-    var readOnly = true;
-
-    if (!Buffer.isBuffer(data)) {
-      if (data instanceof ArrayBuffer) {
-        data = Buffer.from(data);
-      } else if (ArrayBuffer.isView(data)) {
-        data = viewToBuffer(data);
-      } else {
-        data = Buffer.from(data);
-        readOnly = false;
-      }
-    }
-
-    if (this._deflating) {
-      this.enqueue([this.doPing, data, mask, readOnly]);
-    } else {
-      this.doPing(data, mask, readOnly);
-    }
-  }
-
-  /**
-   * Frames and sends a ping message.
-   *
-   * @param {*} data The message to send
-   * @param {Boolean} mask Specifies whether or not to mask `data`
-   * @param {Boolean} readOnly Specifies whether `data` can be modified
-   * @private
-   */
-  doPing (data, mask, readOnly) {
-    this.sendFrame(Sender.frame(data, {
-      fin: true,
-      rsv1: false,
-      opcode: 0x09,
-      mask,
-      readOnly
-    }));
-  }
-
-  /**
-   * Sends a pong message to the other peer.
-   *
-   * @param {*} data The message to send
-   * @param {Boolean} mask Specifies whether or not to mask `data`
-   * @public
-   */
-  pong (data, mask) {
-    var readOnly = true;
-
-    if (!Buffer.isBuffer(data)) {
-      if (data instanceof ArrayBuffer) {
-        data = Buffer.from(data);
-      } else if (ArrayBuffer.isView(data)) {
-        data = viewToBuffer(data);
-      } else {
-        data = Buffer.from(data);
-        readOnly = false;
-      }
-    }
-
-    if (this._deflating) {
-      this.enqueue([this.doPong, data, mask, readOnly]);
-    } else {
-      this.doPong(data, mask, readOnly);
-    }
-  }
-
-  /**
-   * Frames and sends a pong message.
-   *
-   * @param {*} data The message to send
-   * @param {Boolean} mask Specifies whether or not to mask `data`
-   * @param {Boolean} readOnly Specifies whether `data` can be modified
-   * @private
-   */
-  doPong (data, mask, readOnly) {
-    this.sendFrame(Sender.frame(data, {
-      fin: true,
-      rsv1: false,
-      opcode: 0x0a,
-      mask,
-      readOnly
-    }));
-  }
-
-  /**
-   * Sends a data message to the other peer.
-   *
-   * @param {*} data The message to send
-   * @param {Object} options Options object
-   * @param {Boolean} options.compress Specifies whether or not to compress `data`
-   * @param {Boolean} options.binary Specifies whether `data` is binary or text
-   * @param {Boolean} options.fin Specifies whether the fragment is the last one
-   * @param {Boolean} options.mask Specifies whether or not to mask `data`
-   * @param {Function} cb Callback
-   * @public
-   */
-  send (data, options, cb) {
-    var opcode = options.binary ? 2 : 1;
-    var rsv1 = options.compress;
-    var readOnly = true;
-
-    if (!Buffer.isBuffer(data)) {
-      if (data instanceof ArrayBuffer) {
-        data = Buffer.from(data);
-      } else if (ArrayBuffer.isView(data)) {
-        data = viewToBuffer(data);
-      } else {
-        data = Buffer.from(data);
-        readOnly = false;
-      }
-    }
-
-    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];
-
-    if (this._firstFragment) {
-      this._firstFragment = false;
-      if (rsv1 && perMessageDeflate) {
-        rsv1 = data.length >= perMessageDeflate._threshold;
-      }
-      this._compress = rsv1;
-    } else {
-      rsv1 = false;
-      opcode = 0;
-    }
-
-    if (options.fin) this._firstFragment = true;
-
-    if (perMessageDeflate) {
-      const opts = {
-        fin: options.fin,
-        rsv1,
-        opcode,
-        mask: options.mask,
-        readOnly
-      };
-
-      if (this._deflating) {
-        this.enqueue([this.dispatch, data, this._compress, opts, cb]);
-      } else {
-        this.dispatch(data, this._compress, opts, cb);
-      }
-    } else {
-      this.sendFrame(Sender.frame(data, {
-        fin: options.fin,
-        rsv1: false,
-        opcode,
-        mask: options.mask,
-        readOnly
-      }), cb);
-    }
-  }
-
-  /**
-   * Dispatches a data message.
-   *
-   * @param {Buffer} data The message to send
-   * @param {Boolean} compress Specifies whether or not to compress `data`
-   * @param {Object} options Options object
-   * @param {Number} options.opcode The opcode
-   * @param {Boolean} options.readOnly Specifies whether `data` can be modified
-   * @param {Boolean} options.fin Specifies whether or not to set the FIN bit
-   * @param {Boolean} options.mask Specifies whether or not to mask `data`
-   * @param {Boolean} options.rsv1 Specifies whether or not to set the RSV1 bit
-   * @param {Function} cb Callback
-   * @private
-   */
-  dispatch (data, compress, options, cb) {
-    if (!compress) {
-      this.sendFrame(Sender.frame(data, options), cb);
-      return;
-    }
-
-    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];
-
-    this._deflating = true;
-    perMessageDeflate.compress(data, options.fin, (_, buf) => {
-      options.readOnly = false;
-      this.sendFrame(Sender.frame(buf, options), cb);
-      this._deflating = false;
-      this.dequeue();
-    });
-  }
-
-  /**
-   * Executes queued send operations.
-   *
-   * @private
-   */
-  dequeue () {
-    while (!this._deflating && this._queue.length) {
-      const params = this._queue.shift();
-
-      this._bufferedBytes -= params[1].length;
-      params[0].apply(this, params.slice(1));
-    }
-  }
-
-  /**
-   * Enqueues a send operation.
-   *
-   * @param {Array} params Send operation parameters.
-   * @private
-   */
-  enqueue (params) {
-    this._bufferedBytes += params[1].length;
-    this._queue.push(params);
-  }
-
-  /**
-   * Sends a frame.
-   *
-   * @param {Buffer[]} list The frame to send
-   * @param {Function} cb Callback
-   * @private
-   */
-  sendFrame (list, cb) {
-    if (list.length === 2) {
-      this._socket.write(list[0]);
-      this._socket.write(list[1], cb);
-    } else {
-      this._socket.write(list[0], cb);
-    }
-  }
-}
-
-module.exports = Sender;
-
-/**
- * Converts an `ArrayBuffer` view into a buffer.
- *
- * @param {(DataView|TypedArray)} view The view to convert
- * @return {Buffer} Converted view
- * @private
- */
-function viewToBuffer (view) {
-  const buf = Buffer.from(view.buffer);
-
-  if (view.byteLength !== view.buffer.byteLength) {
-    return buf.slice(view.byteOffset, view.byteOffset + view.byteLength);
-  }
-
-  return buf;
-}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Validation.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Validation.js
deleted file mode 100644
index 35c7e4f2a42..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Validation.js
+++ /dev/null
@@ -1,17 +0,0 @@
-/*!
- * ws: a node.js websocket client
- * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
- * MIT Licensed
- */
-
-'use strict';
-
-try {
-  const isValidUTF8 = require('utf-8-validate');
-
-  module.exports = typeof isValidUTF8 === 'object'
-    ? isValidUTF8.Validation.isValidUTF8 // utf-8-validate@<3.0.0
-    : isValidUTF8;
-} catch (e) /* istanbul ignore next */ {
-  module.exports = () => true;
-}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/WebSocket.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/WebSocket.js
deleted file mode 100644
index a8c7b99b132..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/WebSocket.js
+++ /dev/null
@@ -1,717 +0,0 @@
-/*!
- * ws: a node.js websocket client
- * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
- * MIT Licensed
- */
-
-'use strict';
-
-const EventEmitter = require('events');
-const crypto = require('crypto');
-const Ultron = require('ultron');
-const https = require('https');
-const http = require('http');
-const url = require('url');
-
-const PerMessageDeflate = require('./PerMessageDeflate');
-const EventTarget = require('./EventTarget');
-const Extensions = require('./Extensions');
-const constants = require('./Constants');
-const Receiver = require('./Receiver');
-const Sender = require('./Sender');
-
-const protocolVersions = [8, 13];
-const closeTimeout = 30 * 1000; // Allow 30 seconds to terminate the connection cleanly.
-
-/**
- * Class representing a WebSocket.
- *
- * @extends EventEmitter
- */
-class WebSocket extends EventEmitter {
-  /**
-   * Create a new `WebSocket`.
-   *
-   * @param {String} address The URL to which to connect
-   * @param {(String|String[])} protocols The subprotocols
-   * @param {Object} options Connection options
-   */
-  constructor (address, protocols, options) {
-    super();
-
-    if (!protocols) {
-      protocols = [];
-    } else if (typeof protocols === 'string') {
-      protocols = [protocols];
-    } else if (!Array.isArray(protocols)) {
-      options = protocols;
-      protocols = [];
-    }
-
-    this.readyState = WebSocket.CONNECTING;
-    this.bytesReceived = 0;
-    this.extensions = {};
-    this.protocol = '';
-
-    this._binaryType = constants.BINARY_TYPES[0];
-    this._finalize = this.finalize.bind(this);
-    this._closeFrameReceived = false;
-    this._closeFrameSent = false;
-    this._closeMessage = '';
-    this._closeTimer = null;
-    this._finalized = false;
-    this._closeCode = 1006;
-    this._receiver = null;
-    this._sender = null;
-    this._socket = null;
-    this._ultron = null;
-
-    if (Array.isArray(address)) {
-      initAsServerClient.call(this, address[0], address[1], options);
-    } else {
-      initAsClient.call(this, address, protocols, options);
-    }
-  }
-
-  get CONNECTING () { return WebSocket.CONNECTING; }
-  get CLOSING () { return WebSocket.CLOSING; }
-  get CLOSED () { return WebSocket.CLOSED; }
-  get OPEN () { return WebSocket.OPEN; }
-
-  /**
-   * @type {Number}
-   */
-  get bufferedAmount () {
-    var amount = 0;
-
-    if (this._socket) {
-      amount = this._socket.bufferSize + this._sender._bufferedBytes;
-    }
-    return amount;
-  }
-
-  /**
-   * This deviates from the WHATWG interface since ws doesn't support the required
-   * default "blob" type (instead we define a custom "nodebuffer" type).
-   *
-   * @type {String}
-   */
-  get binaryType () {
-    return this._binaryType;
-  }
-
-  set binaryType (type) {
-    if (constants.BINARY_TYPES.indexOf(type) < 0) return;
-
-    this._binaryType = type;
-
-    //
-    // Allow to change `binaryType` on the fly.
-    //
-    if (this._receiver) this._receiver._binaryType = type;
-  }
-
-  /**
-   * Set up the socket and the internal resources.
-   *
-   * @param {net.Socket} socket The network socket between the server and client
-   * @param {Buffer} head The first packet of the upgraded stream
-   * @private
-   */
-  setSocket (socket, head) {
-    socket.setTimeout(0);
-    socket.setNoDelay();
-
-    this._receiver = new Receiver(this.extensions, this._maxPayload, this.binaryType);
-    this._sender = new Sender(socket, this.extensions);
-    this._ultron = new Ultron(socket);
-    this._socket = socket;
-
-    this._ultron.on('close', this._finalize);
-    this._ultron.on('error', this._finalize);
-    this._ultron.on('end', this._finalize);
-
-    if (head.length > 0) socket.unshift(head);
-
-    this._ultron.on('data', (data) => {
-      this.bytesReceived += data.length;
-      this._receiver.add(data);
-    });
-
-    this._receiver.onmessage = (data) => this.emit('message', data);
-    this._receiver.onping = (data) => {
-      this.pong(data, !this._isServer, true);
-      this.emit('ping', data);
-    };
-    this._receiver.onpong = (data) => this.emit('pong', data);
-    this._receiver.onclose = (code, reason) => {
-      this._closeFrameReceived = true;
-      this._closeMessage = reason;
-      this._closeCode = code;
-      if (!this._finalized) this.close(code, reason);
-    };
-    this._receiver.onerror = (error, code) => {
-      this._closeMessage = '';
-      this._closeCode = code;
-
-      //
-      // Ensure that the error is emitted even if `WebSocket#finalize()` has
-      // already been called.
-      //
-      this.readyState = WebSocket.CLOSING;
-      this.emit('error', error);
-      this.finalize(true);
-    };
-
-    this.readyState = WebSocket.OPEN;
-    this.emit('open');
-  }
-
-  /**
-   * Clean up and release internal resources.
-   *
-   * @param {(Boolean|Error)} error Indicates whether or not an error occurred
-   * @private
-   */
-  finalize (error) {
-    if (this._finalized) return;
-
-    this.readyState = WebSocket.CLOSING;
-    this._finalized = true;
-
-    if (typeof error === 'object') this.emit('error', error);
-    if (!this._socket) return this.emitClose();
-
-    clearTimeout(this._closeTimer);
-    this._closeTimer = null;
-
-    this._ultron.destroy();
-    this._ultron = null;
-
-    this._socket.on('error', constants.NOOP);
-
-    if (!error) this._socket.end();
-    else this._socket.destroy();
-
-    this._socket = null;
-    this._sender = null;
-
-    this._receiver.cleanup(() => this.emitClose());
-    this._receiver = null;
-  }
-
-  /**
-   * Emit the `close` event.
-   *
-   * @private
-   */
-  emitClose () {
-    this.readyState = WebSocket.CLOSED;
-
-    this.emit('close', this._closeCode, this._closeMessage);
-
-    if (this.extensions[PerMessageDeflate.extensionName]) {
-      this.extensions[PerMessageDeflate.extensionName].cleanup();
-    }
-
-    this.extensions = null;
-
-    this.removeAllListeners();
-  }
-
-  /**
-   * Pause the socket stream.
-   *
-   * @public
-   */
-  pause () {
-    if (this.readyState !== WebSocket.OPEN) throw new Error('not opened');
-
-    this._socket.pause();
-  }
-
-  /**
-   * Resume the socket stream
-   *
-   * @public
-   */
-  resume () {
-    if (this.readyState !== WebSocket.OPEN) throw new Error('not opened');
-
-    this._socket.resume();
-  }
-
-  /**
-   * Start a closing handshake.
-   *
-   *            +----------+     +-----------+   +----------+
-   *     + - - -|ws.close()|---->|close frame|-->|ws.close()|- - - -
-   *            +----------+     +-----------+   +----------+       |
-   *     |      +----------+     +-----------+         |
-   *            |ws.close()|<----|close frame|<--------+            |
-   *            +----------+     +-----------+         |
-   *  CLOSING         |              +---+             |         CLOSING
-   *                  |          +---|fin|<------------+
-   *     |            |          |   +---+                          |
-   *                  |          |   +---+      +-------------+
-   *     |            +----------+-->|fin|----->|ws.finalize()| - - +
-   *                             |   +---+      +-------------+
-   *     |     +-------------+   |
-   *      - - -|ws.finalize()|<--+
-   *           +-------------+
-   *
-   * @param {Number} code Status code explaining why the connection is closing
-   * @param {String} data A string explaining why the connection is closing
-   * @public
-   */
-  close (code, data) {
-    if (this.readyState === WebSocket.CLOSED) return;
-    if (this.readyState === WebSocket.CONNECTING) {
-      this._req.abort();
-      this.finalize(new Error('closed before the connection is established'));
-      return;
-    }
-
-    if (this.readyState === WebSocket.CLOSING) {
-      if (this._closeFrameSent && this._closeFrameReceived) this._socket.end();
-      return;
-    }
-
-    this.readyState = WebSocket.CLOSING;
-    this._sender.close(code, data, !this._isServer, (err) => {
-      //
-      // This error is handled by the `'error'` listener on the socket. We only
-      // want to know if the close frame has been sent here.
-      //
-      if (err) return;
-
-      this._closeFrameSent = true;
-
-      if (!this._finalized) {
-        if (this._closeFrameReceived) this._socket.end();
-
-        //
-        // Ensure that the connection is cleaned up even when the closing
-        // handshake fails.
-        //
-        this._closeTimer = setTimeout(this._finalize, closeTimeout, true);
-      }
-    });
-  }
-
-  /**
-   * Send a ping message.
-   *
-   * @param {*} data The message to send
-   * @param {Boolean} mask Indicates whether or not to mask `data`
-   * @param {Boolean} failSilently Indicates whether or not to throw if `readyState` isn't `OPEN`
-   * @public
-   */
-  ping (data, mask, failSilently) {
-    if (this.readyState !== WebSocket.OPEN) {
-      if (failSilently) return;
-      throw new Error('not opened');
-    }
-
-    if (typeof data === 'number') data = data.toString();
-    if (mask === undefined) mask = !this._isServer;
-    this._sender.ping(data || constants.EMPTY_BUFFER, mask);
-  }
-
-  /**
-   * Send a pong message.
-   *
-   * @param {*} data The message to send
-   * @param {Boolean} mask Indicates whether or not to mask `data`
-   * @param {Boolean} failSilently Indicates whether or not to throw if `readyState` isn't `OPEN`
-   * @public
-   */
-  pong (data, mask, failSilently) {
-    if (this.readyState !== WebSocket.OPEN) {
-      if (failSilently) return;
-      throw new Error('not opened');
-    }
-
-    if (typeof data === 'number') data = data.toString();
-    if (mask === undefined) mask = !this._isServer;
-    this._sender.pong(data || constants.EMPTY_BUFFER, mask);
-  }
-
-  /**
-   * Send a data message.
-   *
-   * @param {*} data The message to send
-   * @param {Object} options Options object
-   * @param {Boolean} options.compress Specifies whether or not to compress `data`
-   * @param {Boolean} options.binary Specifies whether `data` is binary or text
-   * @param {Boolean} options.fin Specifies whether the fragment is the last one
-   * @param {Boolean} options.mask Specifies whether or not to mask `data`
-   * @param {Function} cb Callback which is executed when data is written out
-   * @public
-   */
-  send (data, options, cb) {
-    if (typeof options === 'function') {
-      cb = options;
-      options = {};
-    }
-
-    if (this.readyState !== WebSocket.OPEN) {
-      if (cb) cb(new Error('not opened'));
-      else throw new Error('not opened');
-      return;
-    }
-
-    if (typeof data === 'number') data = data.toString();
-
-    const opts = Object.assign({
-      binary: typeof data !== 'string',
-      mask: !this._isServer,
-      compress: true,
-      fin: true
-    }, options);
-
-    if (!this.extensions[PerMessageDeflate.extensionName]) {
-      opts.compress = false;
-    }
-
-    this._sender.send(data || constants.EMPTY_BUFFER, opts, cb);
-  }
-
-  /**
-   * Forcibly close the connection.
-   *
-   * @public
-   */
-  terminate () {
-    if (this.readyState === WebSocket.CLOSED) return;
-    if (this.readyState === WebSocket.CONNECTING) {
-      this._req.abort();
-      this.finalize(new Error('closed before the connection is established'));
-      return;
-    }
-
-    this.finalize(true);
-  }
-}
-
-WebSocket.CONNECTING = 0;
-WebSocket.OPEN = 1;
-WebSocket.CLOSING = 2;
-WebSocket.CLOSED = 3;
-
-//
-// Add the `onopen`, `onerror`, `onclose`, and `onmessage` attributes.
-// See https://html.spec.whatwg.org/multipage/comms.html#the-websocket-interface
-//
-['open', 'error', 'close', 'message'].forEach((method) => {
-  Object.defineProperty(WebSocket.prototype, `on${method}`, {
-    /**
-     * Return the listener of the event.
-     *
-     * @return {(Function|undefined)} The event listener or `undefined`
-     * @public
-     */
-    get () {
-      const listeners = this.listeners(method);
-      for (var i = 0; i < listeners.length; i++) {
-        if (listeners[i]._listener) return listeners[i]._listener;
-      }
-    },
-    /**
-     * Add a listener for the event.
-     *
-     * @param {Function} listener The listener to add
-     * @public
-     */
-    set (listener) {
-      const listeners = this.listeners(method);
-      for (var i = 0; i < listeners.length; i++) {
-        //
-        // Remove only the listeners added via `addEventListener`.
-        //
-        if (listeners[i]._listener) this.removeListener(method, listeners[i]);
-      }
-      this.addEventListener(method, listener);
-    }
-  });
-});
-
-WebSocket.prototype.addEventListener = EventTarget.addEventListener;
-WebSocket.prototype.removeEventListener = EventTarget.removeEventListener;
-
-module.exports = WebSocket;
-
-/**
- * Initialize a WebSocket server client.
- *
- * @param {http.IncomingMessage} req The request object
- * @param {net.Socket} socket The network socket between the server and client
- * @param {Buffer} head The first packet of the upgraded stream
- * @param {Object} options WebSocket attributes
- * @param {Number} options.protocolVersion The WebSocket protocol version
- * @param {Object} options.extensions The negotiated extensions
- * @param {Number} options.maxPayload The maximum allowed message size
- * @param {String} options.protocol The chosen subprotocol
- * @private
- */
-function initAsServerClient (socket, head, options) {
-  this.protocolVersion = options.protocolVersion;
-  this._maxPayload = options.maxPayload;
-  this.extensions = options.extensions;
-  this.protocol = options.protocol;
-
-  this._isServer = true;
-
-  this.setSocket(socket, head);
-}
-
-/**
- * Initialize a WebSocket client.
- *
- * @param {String} address The URL to which to connect
- * @param {String[]} protocols The list of subprotocols
- * @param {Object} options Connection options
- * @param {String} options.protocol Value of the `Sec-WebSocket-Protocol` header
- * @param {(Boolean|Object)} options.perMessageDeflate Enable/disable permessage-deflate
- * @param {Number} options.handshakeTimeout Timeout in milliseconds for the handshake request
- * @param {String} options.localAddress Local interface to bind for network connections
- * @param {Number} options.protocolVersion Value of the `Sec-WebSocket-Version` header
- * @param {Object} options.headers An object containing request headers
- * @param {String} options.origin Value of the `Origin` or `Sec-WebSocket-Origin` header
- * @param {http.Agent} options.agent Use the specified Agent
- * @param {String} options.host Value of the `Host` header
- * @param {Number} options.family IP address family to use during hostname lookup (4 or 6).
- * @param {Function} options.checkServerIdentity A function to validate the server hostname
- * @param {Boolean} options.rejectUnauthorized Verify or not the server certificate
- * @param {String} options.passphrase The passphrase for the private key or pfx
- * @param {String} options.ciphers The ciphers to use or exclude
- * @param {String} options.ecdhCurve The curves for ECDH key agreement to use or exclude
- * @param {(String|String[]|Buffer|Buffer[])} options.cert The certificate key
- * @param {(String|String[]|Buffer|Buffer[])} options.key The private key
- * @param {(String|Buffer)} options.pfx The private key, certificate, and CA certs
- * @param {(String|String[]|Buffer|Buffer[])} options.ca Trusted certificates
- * @private
- */
-function initAsClient (address, protocols, options) {
-  options = Object.assign({
-    protocolVersion: protocolVersions[1],
-    protocol: protocols.join(','),
-    perMessageDeflate: true,
-    handshakeTimeout: null,
-    localAddress: null,
-    headers: null,
-    family: null,
-    origin: null,
-    agent: null,
-    host: null,
-
-    //
-    // SSL options.
-    //
-    checkServerIdentity: null,
-    rejectUnauthorized: null,
-    passphrase: null,
-    ciphers: null,
-    ecdhCurve: null,
-    cert: null,
-    key: null,
-    pfx: null,
-    ca: null
-  }, options);
-
-  if (protocolVersions.indexOf(options.protocolVersion) === -1) {
-    throw new Error(
-      `unsupported protocol version: ${options.protocolVersion} ` +
-      `(supported versions: ${protocolVersions.join(', ')})`
-    );
-  }
-
-  this.protocolVersion = options.protocolVersion;
-  this._isServer = false;
-  this.url = address;
-
-  const serverUrl = url.parse(address);
-  const isUnixSocket = serverUrl.protocol === 'ws+unix:';
-
-  if (!serverUrl.host && (!isUnixSocket || !serverUrl.path)) {
-    throw new Error('invalid url');
-  }
-
-  const isSecure = serverUrl.protocol === 'wss:' || serverUrl.protocol === 'https:';
-  const key = crypto.randomBytes(16).toString('base64');
-  const httpObj = isSecure ? https : http;
-  var perMessageDeflate;
-
-  const requestOptions = {
-    port: serverUrl.port || (isSecure ? 443 : 80),
-    host: serverUrl.hostname,
-    path: '/',
-    headers: {
-      'Sec-WebSocket-Version': options.protocolVersion,
-      'Sec-WebSocket-Key': key,
-      'Connection': 'Upgrade',
-      'Upgrade': 'websocket'
-    }
-  };
-
-  if (options.headers) Object.assign(requestOptions.headers, options.headers);
-  if (options.perMessageDeflate) {
-    perMessageDeflate = new PerMessageDeflate(
-      options.perMessageDeflate !== true ? options.perMessageDeflate : {},
-      false
-    );
-    requestOptions.headers['Sec-WebSocket-Extensions'] = Extensions.format({
-      [PerMessageDeflate.extensionName]: perMessageDeflate.offer()
-    });
-  }
-  if (options.protocol) {
-    requestOptions.headers['Sec-WebSocket-Protocol'] = options.protocol;
-  }
-  if (options.origin) {
-    if (options.protocolVersion < 13) {
-      requestOptions.headers['Sec-WebSocket-Origin'] = options.origin;
-    } else {
-      requestOptions.headers.Origin = options.origin;
-    }
-  }
-  if (options.host) requestOptions.headers.Host = options.host;
-  if (serverUrl.auth) requestOptions.auth = serverUrl.auth;
-
-  if (options.localAddress) requestOptions.localAddress = options.localAddress;
-  if (options.family) requestOptions.family = options.family;
-
-  if (isUnixSocket) {
-    const parts = serverUrl.path.split(':');
-
-    requestOptions.socketPath = parts[0];
-    requestOptions.path = parts[1];
-  } else if (serverUrl.path) {
-    //
-    // Make sure that path starts with `/`.
-    //
-    if (serverUrl.path.charAt(0) !== '/') {
-      requestOptions.path = `/${serverUrl.path}`;
-    } else {
-      requestOptions.path = serverUrl.path;
-    }
-  }
-
-  var agent = options.agent;
-
-  //
-  // A custom agent is required for these options.
-  //
-  if (
-    options.rejectUnauthorized != null ||
-    options.checkServerIdentity ||
-    options.passphrase ||
-    options.ciphers ||
-    options.ecdhCurve ||
-    options.cert ||
-    options.key ||
-    options.pfx ||
-    options.ca
-  ) {
-    if (options.passphrase) requestOptions.passphrase = options.passphrase;
-    if (options.ciphers) requestOptions.ciphers = options.ciphers;
-    if (options.ecdhCurve) requestOptions.ecdhCurve = options.ecdhCurve;
-    if (options.cert) requestOptions.cert = options.cert;
-    if (options.key) requestOptions.key = options.key;
-    if (options.pfx) requestOptions.pfx = options.pfx;
-    if (options.ca) requestOptions.ca = options.ca;
-    if (options.checkServerIdentity) {
-      requestOptions.checkServerIdentity = options.checkServerIdentity;
-    }
-    if (options.rejectUnauthorized != null) {
-      requestOptions.rejectUnauthorized = options.rejectUnauthorized;
-    }
-
-    if (!agent) agent = new httpObj.Agent(requestOptions);
-  }
-
-  if (agent) requestOptions.agent = agent;
-
-  this._req = httpObj.get(requestOptions);
-
-  if (options.handshakeTimeout) {
-    this._req.setTimeout(options.handshakeTimeout, () => {
-      this._req.abort();
-      this.finalize(new Error('opening handshake has timed out'));
-    });
-  }
-
-  this._req.on('error', (error) => {
-    if (this._req.aborted) return;
-
-    this._req = null;
-    this.finalize(error);
-  });
-
-  this._req.on('response', (res) => {
-    if (!this.emit('unexpected-response', this._req, res)) {
-      this._req.abort();
-      this.finalize(new Error(`unexpected server response (${res.statusCode})`));
-    }
-  });
-
-  this._req.on('upgrade', (res, socket, head) => {
-    this.emit('headers', res.headers, res);
-
-    //
-    // The user may have closed the connection from a listener of the `headers`
-    // event.
-    //
-    if (this.readyState !== WebSocket.CONNECTING) return;
-
-    this._req = null;
-
-    const digest = crypto.createHash('sha1')
-      .update(key + constants.GUID, 'binary')
-      .digest('base64');
-
-    if (res.headers['sec-websocket-accept'] !== digest) {
-      socket.destroy();
-      return this.finalize(new Error('invalid server key'));
-    }
-
-    const serverProt = res.headers['sec-websocket-protocol'];
-    const protList = (options.protocol || '').split(/, */);
-    var protError;
-
-    if (!options.protocol && serverProt) {
-      protError = 'server sent a subprotocol even though none requested';
-    } else if (options.protocol && !serverProt) {
-      protError = 'server sent no subprotocol even though requested';
-    } else if (serverProt && protList.indexOf(serverProt) === -1) {
-      protError = 'server responded with an invalid protocol';
-    }
-
-    if (protError) {
-      socket.destroy();
-      return this.finalize(new Error(protError));
-    }
-
-    if (serverProt) this.protocol = serverProt;
-
-    if (perMessageDeflate) {
-      try {
-        const serverExtensions = Extensions.parse(
-          res.headers['sec-websocket-extensions']
-        );
-
-        if (serverExtensions[PerMessageDeflate.extensionName]) {
-          perMessageDeflate.accept(
-            serverExtensions[PerMessageDeflate.extensionName]
-          );
-          this.extensions[PerMessageDeflate.extensionName] = perMessageDeflate;
-        }
-      } catch (err) {
-        socket.destroy();
-        this.finalize(new Error('invalid Sec-WebSocket-Extensions header'));
-        return;
-      }
-    }
-
-    this.setSocket(socket, head);
-  });
-}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/WebSocketServer.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/WebSocketServer.js
deleted file mode 100644
index 8ebd6bf817d..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/WebSocketServer.js
+++ /dev/null
@@ -1,326 +0,0 @@
-/*!
- * ws: a node.js websocket client
- * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
- * MIT Licensed
- */
-
-'use strict';
-
-const safeBuffer = require('safe-buffer');
-const EventEmitter = require('events');
-const crypto = require('crypto');
-const Ultron = require('ultron');
-const http = require('http');
-const url = require('url');
-
-const PerMessageDeflate = require('./PerMessageDeflate');
-const Extensions = require('./Extensions');
-const constants = require('./Constants');
-const WebSocket = require('./WebSocket');
-
-const Buffer = safeBuffer.Buffer;
-
-/**
- * Class representing a WebSocket server.
- *
- * @extends EventEmitter
- */
-class WebSocketServer extends EventEmitter {
-  /**
-   * Create a `WebSocketServer` instance.
-   *
-   * @param {Object} options Configuration options
-   * @param {String} options.host The hostname where to bind the server
-   * @param {Number} options.port The port where to bind the server
-   * @param {http.Server} options.server A pre-created HTTP/S server to use
-   * @param {Function} options.verifyClient An hook to reject connections
-   * @param {Function} options.handleProtocols An hook to handle protocols
-   * @param {String} options.path Accept only connections matching this path
-   * @param {Boolean} options.noServer Enable no server mode
-   * @param {Boolean} options.clientTracking Specifies whether or not to track clients
-   * @param {(Boolean|Object)} options.perMessageDeflate Enable/disable permessage-deflate
-   * @param {Number} options.maxPayload The maximum allowed message size
-   * @param {Function} callback A listener for the `listening` event
-   */
-  constructor (options, callback) {
-    super();
-
-    options = Object.assign({
-      maxPayload: 100 * 1024 * 1024,
-      perMessageDeflate: false,
-      handleProtocols: null,
-      clientTracking: true,
-      verifyClient: null,
-      noServer: false,
-      backlog: null, // use default (511 as implemented in net.js)
-      server: null,
-      host: null,
-      path: null,
-      port: null
-    }, options);
-
-    if (options.port == null && !options.server && !options.noServer) {
-      throw new TypeError('missing or invalid options');
-    }
-
-    if (options.port != null) {
-      this._server = http.createServer((req, res) => {
-        const body = http.STATUS_CODES[426];
-
-        res.writeHead(426, {
-          'Content-Length': body.length,
-          'Content-Type': 'text/plain'
-        });
-        res.end(body);
-      });
-      this._server.listen(options.port, options.host, options.backlog, callback);
-    } else if (options.server) {
-      this._server = options.server;
-    }
-
-    if (this._server) {
-      this._ultron = new Ultron(this._server);
-      this._ultron.on('listening', () => this.emit('listening'));
-      this._ultron.on('error', (err) => this.emit('error', err));
-      this._ultron.on('upgrade', (req, socket, head) => {
-        this.handleUpgrade(req, socket, head, (client) => {
-          this.emit('connection', client, req);
-        });
-      });
-    }
-
-    if (options.perMessageDeflate === true) options.perMessageDeflate = {};
-    if (options.clientTracking) this.clients = new Set();
-    this.options = options;
-  }
-
-  /**
-   * Close the server.
-   *
-   * @param {Function} cb Callback
-   * @public
-   */
-  close (cb) {
-    //
-    // Terminate all associated clients.
-    //
-    if (this.clients) {
-      for (const client of this.clients) client.terminate();
-    }
-
-    const server = this._server;
-
-    if (server) {
-      this._ultron.destroy();
-      this._ultron = this._server = null;
-
-      //
-      // Close the http server if it was internally created.
-      //
-      if (this.options.port != null) return server.close(cb);
-    }
-
-    if (cb) cb();
-  }
-
-  /**
-   * See if a given request should be handled by this server instance.
-   *
-   * @param {http.IncomingMessage} req Request object to inspect
-   * @return {Boolean} `true` if the request is valid, else `false`
-   * @public
-   */
-  shouldHandle (req) {
-    if (this.options.path && url.parse(req.url).pathname !== this.options.path) {
-      return false;
-    }
-
-    return true;
-  }
-
-  /**
-   * Handle a HTTP Upgrade request.
-   *
-   * @param {http.IncomingMessage} req The request object
-   * @param {net.Socket} socket The network socket between the server and client
-   * @param {Buffer} head The first packet of the upgraded stream
-   * @param {Function} cb Callback
-   * @public
-   */
-  handleUpgrade (req, socket, head, cb) {
-    socket.on('error', socketError);
-
-    const version = +req.headers['sec-websocket-version'];
-    const extensions = {};
-
-    if (
-      req.method !== 'GET' || req.headers.upgrade.toLowerCase() !== 'websocket' ||
-      !req.headers['sec-websocket-key'] || (version !== 8 && version !== 13) ||
-      !this.shouldHandle(req)
-    ) {
-      return abortConnection(socket, 400);
-    }
-
-    if (this.options.perMessageDeflate) {
-      const perMessageDeflate = new PerMessageDeflate(
-        this.options.perMessageDeflate,
-        true,
-        this.options.maxPayload
-      );
-
-      try {
-        const offers = Extensions.parse(
-          req.headers['sec-websocket-extensions']
-        );
-
-        if (offers[PerMessageDeflate.extensionName]) {
-          perMessageDeflate.accept(offers[PerMessageDeflate.extensionName]);
-          extensions[PerMessageDeflate.extensionName] = perMessageDeflate;
-        }
-      } catch (err) {
-        return abortConnection(socket, 400);
-      }
-    }
-
-    var protocol = (req.headers['sec-websocket-protocol'] || '').split(/, */);
-
-    //
-    // Optionally call external protocol selection handler.
-    //
-    if (this.options.handleProtocols) {
-      protocol = this.options.handleProtocols(protocol, req);
-      if (protocol === false) return abortConnection(socket, 401);
-    } else {
-      protocol = protocol[0];
-    }
-
-    //
-    // Optionally call external client verification handler.
-    //
-    if (this.options.verifyClient) {
-      const info = {
-        origin: req.headers[`${version === 8 ? 'sec-websocket-origin' : 'origin'}`],
-        secure: !!(req.connection.authorized || req.connection.encrypted),
-        req
-      };
-
-      if (this.options.verifyClient.length === 2) {
-        this.options.verifyClient(info, (verified, code, message) => {
-          if (!verified) return abortConnection(socket, code || 401, message);
-
-          this.completeUpgrade(
-            protocol,
-            extensions,
-            version,
-            req,
-            socket,
-            head,
-            cb
-          );
-        });
-        return;
-      }
-
-      if (!this.options.verifyClient(info)) return abortConnection(socket, 401);
-    }
-
-    this.completeUpgrade(protocol, extensions, version, req, socket, head, cb);
-  }
-
-  /**
-   * Upgrade the connection to WebSocket.
-   *
-   * @param {String} protocol The chosen subprotocol
-   * @param {Object} extensions The accepted extensions
-   * @param {Number} version The WebSocket protocol version
-   * @param {http.IncomingMessage} req The request object
-   * @param {net.Socket} socket The network socket between the server and client
-   * @param {Buffer} head The first packet of the upgraded stream
-   * @param {Function} cb Callback
-   * @private
-   */
-  completeUpgrade (protocol, extensions, version, req, socket, head, cb) {
-    //
-    // Destroy the socket if the client has already sent a FIN packet.
-    //
-    if (!socket.readable || !socket.writable) return socket.destroy();
-
-    const key = crypto.createHash('sha1')
-      .update(req.headers['sec-websocket-key'] + constants.GUID, 'binary')
-      .digest('base64');
-
-    const headers = [
-      'HTTP/1.1 101 Switching Protocols',
-      'Upgrade: websocket',
-      'Connection: Upgrade',
-      `Sec-WebSocket-Accept: ${key}`
-    ];
-
-    if (protocol) headers.push(`Sec-WebSocket-Protocol: ${protocol}`);
-    if (extensions[PerMessageDeflate.extensionName]) {
-      const params = extensions[PerMessageDeflate.extensionName].params;
-      const value = Extensions.format({
-        [PerMessageDeflate.extensionName]: [params]
-      });
-      headers.push(`Sec-WebSocket-Extensions: ${value}`);
-    }
-
-    //
-    // Allow external modification/inspection of handshake headers.
-    //
-    this.emit('headers', headers, req);
-
-    socket.write(headers.concat('\r\n').join('\r\n'));
-
-    const client = new WebSocket([socket, head], null, {
-      maxPayload: this.options.maxPayload,
-      protocolVersion: version,
-      extensions,
-      protocol
-    });
-
-    if (this.clients) {
-      this.clients.add(client);
-      client.on('close', () => this.clients.delete(client));
-    }
-
-    socket.removeListener('error', socketError);
-    cb(client);
-  }
-}
-
-module.exports = WebSocketServer;
-
-/**
- * Handle premature socket errors.
- *
- * @private
- */
-function socketError () {
-  this.destroy();
-}
-
-/**
- * Close the connection when preconditions are not fulfilled.
- *
- * @param {net.Socket} socket The socket of the upgrade request
- * @param {Number} code The HTTP response status code
- * @param {String} [message] The HTTP response body
- * @private
- */
-function abortConnection (socket, code, message) {
-  if (socket.writable) {
-    message = message || http.STATUS_CODES[code];
-    socket.write(
-      `HTTP/1.1 ${code} ${http.STATUS_CODES[code]}\r\n` +
-      'Connection: close\r\n' +
-      'Content-type: text/html\r\n' +
-      `Content-Length: ${Buffer.byteLength(message)}\r\n` +
-      '\r\n' +
-      message
-    );
-  }
-
-  socket.removeListener('error', socketError);
-  socket.destroy();
-}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/buffer-util.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/buffer-util.js
new file mode 100644
index 00000000000..6fd84c31174
--- /dev/null
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/buffer-util.js
@@ -0,0 +1,129 @@
+'use strict';
+
+const { EMPTY_BUFFER } = require('./constants');
+
+/**
+ * Merges an array of buffers into a new buffer.
+ *
+ * @param {Buffer[]} list The array of buffers to concat
+ * @param {Number} totalLength The total length of buffers in the list
+ * @return {Buffer} The resulting buffer
+ * @public
+ */
+function concat(list, totalLength) {
+  if (list.length === 0) return EMPTY_BUFFER;
+  if (list.length === 1) return list[0];
+
+  const target = Buffer.allocUnsafe(totalLength);
+  let offset = 0;
+
+  for (let i = 0; i < list.length; i++) {
+    const buf = list[i];
+    target.set(buf, offset);
+    offset += buf.length;
+  }
+
+  if (offset < totalLength) return target.slice(0, offset);
+
+  return target;
+}
+
+/**
+ * Masks a buffer using the given mask.
+ *
+ * @param {Buffer} source The buffer to mask
+ * @param {Buffer} mask The mask to use
+ * @param {Buffer} output The buffer where to store the result
+ * @param {Number} offset The offset at which to start writing
+ * @param {Number} length The number of bytes to mask.
+ * @public
+ */
+function _mask(source, mask, output, offset, length) {
+  for (let i = 0; i < length; i++) {
+    output[offset + i] = source[i] ^ mask[i & 3];
+  }
+}
+
+/**
+ * Unmasks a buffer using the given mask.
+ *
+ * @param {Buffer} buffer The buffer to unmask
+ * @param {Buffer} mask The mask to use
+ * @public
+ */
+function _unmask(buffer, mask) {
+  // Required until https://github.com/nodejs/node/issues/9006 is resolved.
+  const length = buffer.length;
+  for (let i = 0; i < length; i++) {
+    buffer[i] ^= mask[i & 3];
+  }
+}
+
+/**
+ * Converts a buffer to an `ArrayBuffer`.
+ *
+ * @param {Buffer} buf The buffer to convert
+ * @return {ArrayBuffer} Converted buffer
+ * @public
+ */
+function toArrayBuffer(buf) {
+  if (buf.byteLength === buf.buffer.byteLength) {
+    return buf.buffer;
+  }
+
+  return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);
+}
+
+/**
+ * Converts `data` to a `Buffer`.
+ *
+ * @param {*} data The data to convert
+ * @return {Buffer} The buffer
+ * @throws {TypeError}
+ * @public
+ */
+function toBuffer(data) {
+  toBuffer.readOnly = true;
+
+  if (Buffer.isBuffer(data)) return data;
+
+  let buf;
+
+  if (data instanceof ArrayBuffer) {
+    buf = Buffer.from(data);
+  } else if (ArrayBuffer.isView(data)) {
+    buf = Buffer.from(data.buffer, data.byteOffset, data.byteLength);
+  } else {
+    buf = Buffer.from(data);
+    toBuffer.readOnly = false;
+  }
+
+  return buf;
+}
+
+try {
+  const bufferUtil = require('bufferutil');
+  const bu = bufferUtil.BufferUtil || bufferUtil;
+
+  module.exports = {
+    concat,
+    mask(source, mask, output, offset, length) {
+      if (length < 48) _mask(source, mask, output, offset, length);
+      else bu.mask(source, mask, output, offset, length);
+    },
+    toArrayBuffer,
+    toBuffer,
+    unmask(buffer, mask) {
+      if (buffer.length < 32) _unmask(buffer, mask);
+      else bu.unmask(buffer, mask);
+    }
+  };
+} catch (e) /* istanbul ignore next */ {
+  module.exports = {
+    concat,
+    mask: _mask,
+    toArrayBuffer,
+    toBuffer,
+    unmask: _unmask
+  };
+}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/constants.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/constants.js
new file mode 100644
index 00000000000..4082981f89d
--- /dev/null
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/constants.js
@@ -0,0 +1,10 @@
+'use strict';
+
+module.exports = {
+  BINARY_TYPES: ['nodebuffer', 'arraybuffer', 'fragments'],
+  GUID: '258EAFA5-E914-47DA-95CA-C5AB0DC85B11',
+  kStatusCode: Symbol('status-code'),
+  kWebSocket: Symbol('websocket'),
+  EMPTY_BUFFER: Buffer.alloc(0),
+  NOOP: () => {}
+};
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/EventTarget.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/event-target.js
index c48137b914a..a6fbe72b7b1 100644
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/EventTarget.js
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/event-target.js
@@ -10,9 +10,10 @@ class Event {
    * Create a new `Event`.
    *
    * @param {String} type The name of the event
-   * @param {Object} target A reference to the target to which the event was dispatched
+   * @param {Object} target A reference to the target to which the event was
+   *     dispatched
    */
-  constructor (type, target) {
+  constructor(type, target) {
     this.target = target;
     this.type = type;
   }
@@ -29,9 +30,10 @@ class MessageEvent extends Event {
    * Create a new `MessageEvent`.
    *
    * @param {(String|Buffer|ArrayBuffer|Buffer[])} data The received data
-   * @param {WebSocket} target A reference to the target to which the event was dispatched
+   * @param {WebSocket} target A reference to the target to which the event was
+   *     dispatched
    */
-  constructor (data, target) {
+  constructor(data, target) {
     super('message', target);
 
     this.data = data;
@@ -48,11 +50,14 @@ class CloseEvent extends Event {
   /**
    * Create a new `CloseEvent`.
    *
-   * @param {Number} code The status code explaining why the connection is being closed
-   * @param {String} reason A human-readable string explaining why the connection is closing
-   * @param {WebSocket} target A reference to the target to which the event was dispatched
+   * @param {Number} code The status code explaining why the connection is being
+   *     closed
+   * @param {String} reason A human-readable string explaining why the
+   *     connection is closing
+   * @param {WebSocket} target A reference to the target to which the event was
+   *     dispatched
    */
-  constructor (code, reason, target) {
+  constructor(code, reason, target) {
     super('close', target);
 
     this.wasClean = target._closeFrameReceived && target._closeFrameSent;
@@ -71,14 +76,37 @@ class OpenEvent extends Event {
   /**
    * Create a new `OpenEvent`.
    *
-   * @param {WebSocket} target A reference to the target to which the event was dispatched
+   * @param {WebSocket} target A reference to the target to which the event was
+   *     dispatched
    */
-  constructor (target) {
+  constructor(target) {
     super('open', target);
   }
 }
 
 /**
+ * Class representing an error event.
+ *
+ * @extends Event
+ * @private
+ */
+class ErrorEvent extends Event {
+  /**
+   * Create a new `ErrorEvent`.
+   *
+   * @param {Object} error The error that generated this event
+   * @param {WebSocket} target A reference to the target to which the event was
+   *     dispatched
+   */
+  constructor(error, target) {
+    super('error', target);
+
+    this.message = error.message;
+    this.error = error;
+  }
+}
+
+/**
  * This provides methods for emulating the `EventTarget` interface. It's not
  * meant to be used directly.
  *
@@ -88,61 +116,66 @@ const EventTarget = {
   /**
    * Register an event listener.
    *
-   * @param {String} method A string representing the event type to listen for
+   * @param {String} type A string representing the event type to listen for
    * @param {Function} listener The listener to add
+   * @param {Object} [options] An options object specifies characteristics about
+   *     the event listener
+   * @param {Boolean} [options.once=false] A `Boolean`` indicating that the
+   *     listener should be invoked at most once after being added. If `true`,
+   *     the listener would be automatically removed when invoked.
    * @public
    */
-  addEventListener (method, listener) {
+  addEventListener(type, listener, options) {
     if (typeof listener !== 'function') return;
 
-    function onMessage (data) {
+    function onMessage(data) {
       listener.call(this, new MessageEvent(data, this));
     }
 
-    function onClose (code, message) {
+    function onClose(code, message) {
       listener.call(this, new CloseEvent(code, message, this));
     }
 
-    function onError (event) {
-      event.type = 'error';
-      event.target = this;
-      listener.call(this, event);
+    function onError(error) {
+      listener.call(this, new ErrorEvent(error, this));
     }
 
-    function onOpen () {
+    function onOpen() {
       listener.call(this, new OpenEvent(this));
     }
 
-    if (method === 'message') {
+    const method = options && options.once ? 'once' : 'on';
+
+    if (type === 'message') {
       onMessage._listener = listener;
-      this.on(method, onMessage);
-    } else if (method === 'close') {
+      this[method](type, onMessage);
+    } else if (type === 'close') {
       onClose._listener = listener;
-      this.on(method, onClose);
-    } else if (method === 'error') {
+      this[method](type, onClose);
+    } else if (type === 'error') {
       onError._listener = listener;
-      this.on(method, onError);
-    } else if (method === 'open') {
+      this[method](type, onError);
+    } else if (type === 'open') {
       onOpen._listener = listener;
-      this.on(method, onOpen);
+      this[method](type, onOpen);
     } else {
-      this.on(method, listener);
+      this[method](type, listener);
     }
   },
 
   /**
    * Remove an event listener.
    *
-   * @param {String} method A string representing the event type to remove
+   * @param {String} type A string representing the event type to remove
    * @param {Function} listener The listener to remove
    * @public
    */
-  removeEventListener (method, listener) {
-    const listeners = this.listeners(method);
+  removeEventListener(type, listener) {
+    const listeners = this.listeners(type);
 
-    for (var i = 0; i < listeners.length; i++) {
+    for (let i = 0; i < listeners.length; i++) {
       if (listeners[i] === listener || listeners[i]._listener === listener) {
-        this.removeListener(method, listeners[i]);
+        this.removeListener(type, listeners[i]);
       }
     }
   }
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Extensions.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/extension.js
index 15fee121647..87a421329d4 100644
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/Extensions.js
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/extension.js
@@ -11,6 +11,7 @@
 // tokenChars[34] === 0 // '"'
 // ...
 //
+// prettier-ignore
 const tokenChars = [
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0 - 15
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 16 - 31
@@ -32,9 +33,9 @@ const tokenChars = [
  *     parameter value
  * @private
  */
-function push (dest, name, elem) {
-  if (Object.prototype.hasOwnProperty.call(dest, name)) dest[name].push(elem);
-  else dest[name] = [elem];
+function push(dest, name, elem) {
+  if (dest[name] === undefined) dest[name] = [elem];
+  else dest[name].push(elem);
 }
 
 /**
@@ -44,43 +45,46 @@ function push (dest, name, elem) {
  * @return {Object} The parsed object
  * @public
  */
-function parse (header) {
-  const offers = {};
+function parse(header) {
+  const offers = Object.create(null);
 
   if (header === undefined || header === '') return offers;
 
-  var params = {};
-  var mustUnescape = false;
-  var isEscaping = false;
-  var inQuotes = false;
-  var extensionName;
-  var paramName;
-  var start = -1;
-  var end = -1;
-
-  for (var i = 0; i < header.length; i++) {
+  let params = Object.create(null);
+  let mustUnescape = false;
+  let isEscaping = false;
+  let inQuotes = false;
+  let extensionName;
+  let paramName;
+  let start = -1;
+  let end = -1;
+  let i = 0;
+
+  for (; i < header.length; i++) {
     const code = header.charCodeAt(i);
 
     if (extensionName === undefined) {
       if (end === -1 && tokenChars[code] === 1) {
         if (start === -1) start = i;
-      } else if (code === 0x20/* ' ' */|| code === 0x09/* '\t' */) {
+      } else if (code === 0x20 /* ' ' */ || code === 0x09 /* '\t' */) {
         if (end === -1 && start !== -1) end = i;
-      } else if (code === 0x3b/* ';' */ || code === 0x2c/* ',' */) {
-        if (start === -1) throw new Error(`unexpected character at index ${i}`);
+      } else if (code === 0x3b /* ';' */ || code === 0x2c /* ',' */) {
+        if (start === -1) {
+          throw new SyntaxError(`Unexpected character at index ${i}`);
+        }
 
         if (end === -1) end = i;
         const name = header.slice(start, end);
         if (code === 0x2c) {
           push(offers, name, params);
-          params = {};
+          params = Object.create(null);
         } else {
           extensionName = name;
         }
 
         start = end = -1;
       } else {
-        throw new Error(`unexpected character at index ${i}`);
+        throw new SyntaxError(`Unexpected character at index ${i}`);
       }
     } else if (paramName === undefined) {
       if (end === -1 && tokenChars[code] === 1) {
@@ -88,22 +92,24 @@ function parse (header) {
       } else if (code === 0x20 || code === 0x09) {
         if (end === -1 && start !== -1) end = i;
       } else if (code === 0x3b || code === 0x2c) {
-        if (start === -1) throw new Error(`unexpected character at index ${i}`);
+        if (start === -1) {
+          throw new SyntaxError(`Unexpected character at index ${i}`);
+        }
 
         if (end === -1) end = i;
         push(params, header.slice(start, end), true);
         if (code === 0x2c) {
           push(offers, extensionName, params);
-          params = {};
+          params = Object.create(null);
           extensionName = undefined;
         }
 
         start = end = -1;
-      } else if (code === 0x3d/* '=' */&& start !== -1 && end === -1) {
+      } else if (code === 0x3d /* '=' */ && start !== -1 && end === -1) {
         paramName = header.slice(start, i);
         start = end = -1;
       } else {
-        throw new Error(`unexpected character at index ${i}`);
+        throw new SyntaxError(`Unexpected character at index ${i}`);
       }
     } else {
       //
@@ -113,7 +119,7 @@ function parse (header) {
       //
       if (isEscaping) {
         if (tokenChars[code] !== 1) {
-          throw new Error(`unexpected character at index ${i}`);
+          throw new SyntaxError(`Unexpected character at index ${i}`);
         }
         if (start === -1) start = i;
         else if (!mustUnescape) mustUnescape = true;
@@ -121,13 +127,13 @@ function parse (header) {
       } else if (inQuotes) {
         if (tokenChars[code] === 1) {
           if (start === -1) start = i;
-        } else if (code === 0x22/* '"' */ && start !== -1) {
+        } else if (code === 0x22 /* '"' */ && start !== -1) {
           inQuotes = false;
           end = i;
-        } else if (code === 0x5c/* '\' */) {
+        } else if (code === 0x5c /* '\' */) {
           isEscaping = true;
         } else {
-          throw new Error(`unexpected character at index ${i}`);
+          throw new SyntaxError(`Unexpected character at index ${i}`);
         }
       } else if (code === 0x22 && header.charCodeAt(i - 1) === 0x3d) {
         inQuotes = true;
@@ -136,10 +142,12 @@ function parse (header) {
       } else if (start !== -1 && (code === 0x20 || code === 0x09)) {
         if (end === -1) end = i;
       } else if (code === 0x3b || code === 0x2c) {
-        if (start === -1) throw new Error(`unexpected character at index ${i}`);
+        if (start === -1) {
+          throw new SyntaxError(`Unexpected character at index ${i}`);
+        }
 
         if (end === -1) end = i;
-        var value = header.slice(start, end);
+        let value = header.slice(start, end);
         if (mustUnescape) {
           value = value.replace(/\\/g, '');
           mustUnescape = false;
@@ -147,24 +155,26 @@ function parse (header) {
         push(params, paramName, value);
         if (code === 0x2c) {
           push(offers, extensionName, params);
-          params = {};
+          params = Object.create(null);
           extensionName = undefined;
         }
 
         paramName = undefined;
         start = end = -1;
       } else {
-        throw new Error(`unexpected character at index ${i}`);
+        throw new SyntaxError(`Unexpected character at index ${i}`);
       }
     }
   }
 
-  if (start === -1 || inQuotes) throw new Error('unexpected end of input');
+  if (start === -1 || inQuotes) {
+    throw new SyntaxError('Unexpected end of input');
+  }
 
   if (end === -1) end = i;
   const token = header.slice(start, end);
   if (extensionName === undefined) {
-    push(offers, token, {});
+    push(offers, token, params);
   } else {
     if (paramName === undefined) {
       push(params, token, true);
@@ -180,24 +190,34 @@ function parse (header) {
 }
 
 /**
- * Serializes a parsed `Sec-WebSocket-Extensions` header to a string.
+ * Builds the `Sec-WebSocket-Extensions` header field value.
  *
- * @param {Object} value The object to format
- * @return {String} A string representing the given value
+ * @param {Object} extensions The map of extensions and parameters to format
+ * @return {String} A string representing the given object
  * @public
  */
-function format (value) {
-  return Object.keys(value).map((token) => {
-    var paramsList = value[token];
-    if (!Array.isArray(paramsList)) paramsList = [paramsList];
-    return paramsList.map((params) => {
-      return [token].concat(Object.keys(params).map((k) => {
-        var p = params[k];
-        if (!Array.isArray(p)) p = [p];
-        return p.map((v) => v === true ? k : `${k}=${v}`).join('; ');
-      })).join('; ');
-    }).join(', ');
-  }).join(', ');
+function format(extensions) {
+  return Object.keys(extensions)
+    .map((extension) => {
+      let configurations = extensions[extension];
+      if (!Array.isArray(configurations)) configurations = [configurations];
+      return configurations
+        .map((params) => {
+          return [extension]
+            .concat(
+              Object.keys(params).map((k) => {
+                let values = params[k];
+                if (!Array.isArray(values)) values = [values];
+                return values
+                  .map((v) => (v === true ? k : `${k}=${v}`))
+                  .join('; ');
+              })
+            )
+            .join('; ');
+        })
+        .join(', ');
+    })
+    .join(', ');
 }
 
 module.exports = { format, parse };
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/limiter.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/limiter.js
new file mode 100644
index 00000000000..3fd35784ea9
--- /dev/null
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/limiter.js
@@ -0,0 +1,55 @@
+'use strict';
+
+const kDone = Symbol('kDone');
+const kRun = Symbol('kRun');
+
+/**
+ * A very simple job queue with adjustable concurrency. Adapted from
+ * https://github.com/STRML/async-limiter
+ */
+class Limiter {
+  /**
+   * Creates a new `Limiter`.
+   *
+   * @param {Number} [concurrency=Infinity] The maximum number of jobs allowed
+   *     to run concurrently
+   */
+  constructor(concurrency) {
+    this[kDone] = () => {
+      this.pending--;
+      this[kRun]();
+    };
+    this.concurrency = concurrency || Infinity;
+    this.jobs = [];
+    this.pending = 0;
+  }
+
+  /**
+   * Adds a job to the queue.
+   *
+   * @param {Function} job The job to run
+   * @public
+   */
+  add(job) {
+    this.jobs.push(job);
+    this[kRun]();
+  }
+
+  /**
+   * Removes a job from the queue and runs it if possible.
+   *
+   * @private
+   */
+  [kRun]() {
+    if (this.pending === this.concurrency) return;
+
+    if (this.jobs.length) {
+      const job = this.jobs.shift();
+
+      this.pending++;
+      job(this[kDone]);
+    }
+  }
+}
+
+module.exports = Limiter;
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/permessage-deflate.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/permessage-deflate.js
new file mode 100644
index 00000000000..7d7209b9ec4
--- /dev/null
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/permessage-deflate.js
@@ -0,0 +1,514 @@
+'use strict';
+
+const zlib = require('zlib');
+
+const bufferUtil = require('./buffer-util');
+const Limiter = require('./limiter');
+const { kStatusCode, NOOP } = require('./constants');
+
+const TRAILER = Buffer.from([0x00, 0x00, 0xff, 0xff]);
+const kPerMessageDeflate = Symbol('permessage-deflate');
+const kTotalLength = Symbol('total-length');
+const kCallback = Symbol('callback');
+const kBuffers = Symbol('buffers');
+const kError = Symbol('error');
+
+//
+// We limit zlib concurrency, which prevents severe memory fragmentation
+// as documented in https://github.com/nodejs/node/issues/8871#issuecomment-250915913
+// and https://github.com/websockets/ws/issues/1202
+//
+// Intentionally global; it's the global thread pool that's an issue.
+//
+let zlibLimiter;
+
+/**
+ * permessage-deflate implementation.
+ */
+class PerMessageDeflate {
+  /**
+   * Creates a PerMessageDeflate instance.
+   *
+   * @param {Object} [options] Configuration options
+   * @param {Boolean} [options.serverNoContextTakeover=false] Request/accept
+   *     disabling of server context takeover
+   * @param {Boolean} [options.clientNoContextTakeover=false] Advertise/
+   *     acknowledge disabling of client context takeover
+   * @param {(Boolean|Number)} [options.serverMaxWindowBits] Request/confirm the
+   *     use of a custom server window size
+   * @param {(Boolean|Number)} [options.clientMaxWindowBits] Advertise support
+   *     for, or request, a custom client window size
+   * @param {Object} [options.zlibDeflateOptions] Options to pass to zlib on
+   *     deflate
+   * @param {Object} [options.zlibInflateOptions] Options to pass to zlib on
+   *     inflate
+   * @param {Number} [options.threshold=1024] Size (in bytes) below which
+   *     messages should not be compressed
+   * @param {Number} [options.concurrencyLimit=10] The number of concurrent
+   *     calls to zlib
+   * @param {Boolean} [isServer=false] Create the instance in either server or
+   *     client mode
+   * @param {Number} [maxPayload=0] The maximum allowed message length
+   */
+  constructor(options, isServer, maxPayload) {
+    this._maxPayload = maxPayload | 0;
+    this._options = options || {};
+    this._threshold =
+      this._options.threshold !== undefined ? this._options.threshold : 1024;
+    this._isServer = !!isServer;
+    this._deflate = null;
+    this._inflate = null;
+
+    this.params = null;
+
+    if (!zlibLimiter) {
+      const concurrency =
+        this._options.concurrencyLimit !== undefined
+          ? this._options.concurrencyLimit
+          : 10;
+      zlibLimiter = new Limiter(concurrency);
+    }
+  }
+
+  /**
+   * @type {String}
+   */
+  static get extensionName() {
+    return 'permessage-deflate';
+  }
+
+  /**
+   * Create an extension negotiation offer.
+   *
+   * @return {Object} Extension parameters
+   * @public
+   */
+  offer() {
+    const params = {};
+
+    if (this._options.serverNoContextTakeover) {
+      params.server_no_context_takeover = true;
+    }
+    if (this._options.clientNoContextTakeover) {
+      params.client_no_context_takeover = true;
+    }
+    if (this._options.serverMaxWindowBits) {
+      params.server_max_window_bits = this._options.serverMaxWindowBits;
+    }
+    if (this._options.clientMaxWindowBits) {
+      params.client_max_window_bits = this._options.clientMaxWindowBits;
+    } else if (this._options.clientMaxWindowBits == null) {
+      params.client_max_window_bits = true;
+    }
+
+    return params;
+  }
+
+  /**
+   * Accept an extension negotiation offer/response.
+   *
+   * @param {Array} configurations The extension negotiation offers/reponse
+   * @return {Object} Accepted configuration
+   * @public
+   */
+  accept(configurations) {
+    configurations = this.normalizeParams(configurations);
+
+    this.params = this._isServer
+      ? this.acceptAsServer(configurations)
+      : this.acceptAsClient(configurations);
+
+    return this.params;
+  }
+
+  /**
+   * Releases all resources used by the extension.
+   *
+   * @public
+   */
+  cleanup() {
+    if (this._inflate) {
+      this._inflate.close();
+      this._inflate = null;
+    }
+
+    if (this._deflate) {
+      const callback = this._deflate[kCallback];
+
+      this._deflate.close();
+      this._deflate = null;
+
+      if (callback) {
+        callback(
+          new Error(
+            'The deflate stream was closed while data was being processed'
+          )
+        );
+      }
+    }
+  }
+
+  /**
+   *  Accept an extension negotiation offer.
+   *
+   * @param {Array} offers The extension negotiation offers
+   * @return {Object} Accepted configuration
+   * @private
+   */
+  acceptAsServer(offers) {
+    const opts = this._options;
+    const accepted = offers.find((params) => {
+      if (
+        (opts.serverNoContextTakeover === false &&
+          params.server_no_context_takeover) ||
+        (params.server_max_window_bits &&
+          (opts.serverMaxWindowBits === false ||
+            (typeof opts.serverMaxWindowBits === 'number' &&
+              opts.serverMaxWindowBits > params.server_max_window_bits))) ||
+        (typeof opts.clientMaxWindowBits === 'number' &&
+          !params.client_max_window_bits)
+      ) {
+        return false;
+      }
+
+      return true;
+    });
+
+    if (!accepted) {
+      throw new Error('None of the extension offers can be accepted');
+    }
+
+    if (opts.serverNoContextTakeover) {
+      accepted.server_no_context_takeover = true;
+    }
+    if (opts.clientNoContextTakeover) {
+      accepted.client_no_context_takeover = true;
+    }
+    if (typeof opts.serverMaxWindowBits === 'number') {
+      accepted.server_max_window_bits = opts.serverMaxWindowBits;
+    }
+    if (typeof opts.clientMaxWindowBits === 'number') {
+      accepted.client_max_window_bits = opts.clientMaxWindowBits;
+    } else if (
+      accepted.client_max_window_bits === true ||
+      opts.clientMaxWindowBits === false
+    ) {
+      delete accepted.client_max_window_bits;
+    }
+
+    return accepted;
+  }
+
+  /**
+   * Accept the extension negotiation response.
+   *
+   * @param {Array} response The extension negotiation response
+   * @return {Object} Accepted configuration
+   * @private
+   */
+  acceptAsClient(response) {
+    const params = response[0];
+
+    if (
+      this._options.clientNoContextTakeover === false &&
+      params.client_no_context_takeover
+    ) {
+      throw new Error('Unexpected parameter "client_no_context_takeover"');
+    }
+
+    if (!params.client_max_window_bits) {
+      if (typeof this._options.clientMaxWindowBits === 'number') {
+        params.client_max_window_bits = this._options.clientMaxWindowBits;
+      }
+    } else if (
+      this._options.clientMaxWindowBits === false ||
+      (typeof this._options.clientMaxWindowBits === 'number' &&
+        params.client_max_window_bits > this._options.clientMaxWindowBits)
+    ) {
+      throw new Error(
+        'Unexpected or invalid parameter "client_max_window_bits"'
+      );
+    }
+
+    return params;
+  }
+
+  /**
+   * Normalize parameters.
+   *
+   * @param {Array} configurations The extension negotiation offers/reponse
+   * @return {Array} The offers/response with normalized parameters
+   * @private
+   */
+  normalizeParams(configurations) {
+    configurations.forEach((params) => {
+      Object.keys(params).forEach((key) => {
+        let value = params[key];
+
+        if (value.length > 1) {
+          throw new Error(`Parameter "${key}" must have only a single value`);
+        }
+
+        value = value[0];
+
+        if (key === 'client_max_window_bits') {
+          if (value !== true) {
+            const num = +value;
+            if (!Number.isInteger(num) || num < 8 || num > 15) {
+              throw new TypeError(
+                `Invalid value for parameter "${key}": ${value}`
+              );
+            }
+            value = num;
+          } else if (!this._isServer) {
+            throw new TypeError(
+              `Invalid value for parameter "${key}": ${value}`
+            );
+          }
+        } else if (key === 'server_max_window_bits') {
+          const num = +value;
+          if (!Number.isInteger(num) || num < 8 || num > 15) {
+            throw new TypeError(
+              `Invalid value for parameter "${key}": ${value}`
+            );
+          }
+          value = num;
+        } else if (
+          key === 'client_no_context_takeover' ||
+          key === 'server_no_context_takeover'
+        ) {
+          if (value !== true) {
+            throw new TypeError(
+              `Invalid value for parameter "${key}": ${value}`
+            );
+          }
+        } else {
+          throw new Error(`Unknown parameter "${key}"`);
+        }
+
+        params[key] = value;
+      });
+    });
+
+    return configurations;
+  }
+
+  /**
+   * Decompress data. Concurrency limited.
+   *
+   * @param {Buffer} data Compressed data
+   * @param {Boolean} fin Specifies whether or not this is the last fragment
+   * @param {Function} callback Callback
+   * @public
+   */
+  decompress(data, fin, callback) {
+    zlibLimiter.add((done) => {
+      this._decompress(data, fin, (err, result) => {
+        done();
+        callback(err, result);
+      });
+    });
+  }
+
+  /**
+   * Compress data. Concurrency limited.
+   *
+   * @param {Buffer} data Data to compress
+   * @param {Boolean} fin Specifies whether or not this is the last fragment
+   * @param {Function} callback Callback
+   * @public
+   */
+  compress(data, fin, callback) {
+    zlibLimiter.add((done) => {
+      this._compress(data, fin, (err, result) => {
+        done();
+        callback(err, result);
+      });
+    });
+  }
+
+  /**
+   * Decompress data.
+   *
+   * @param {Buffer} data Compressed data
+   * @param {Boolean} fin Specifies whether or not this is the last fragment
+   * @param {Function} callback Callback
+   * @private
+   */
+  _decompress(data, fin, callback) {
+    const endpoint = this._isServer ? 'client' : 'server';
+
+    if (!this._inflate) {
+      const key = `${endpoint}_max_window_bits`;
+      const windowBits =
+        typeof this.params[key] !== 'number'
+          ? zlib.Z_DEFAULT_WINDOWBITS
+          : this.params[key];
+
+      this._inflate = zlib.createInflateRaw({
+        ...this._options.zlibInflateOptions,
+        windowBits
+      });
+      this._inflate[kPerMessageDeflate] = this;
+      this._inflate[kTotalLength] = 0;
+      this._inflate[kBuffers] = [];
+      this._inflate.on('error', inflateOnError);
+      this._inflate.on('data', inflateOnData);
+    }
+
+    this._inflate[kCallback] = callback;
+
+    this._inflate.write(data);
+    if (fin) this._inflate.write(TRAILER);
+
+    this._inflate.flush(() => {
+      const err = this._inflate[kError];
+
+      if (err) {
+        this._inflate.close();
+        this._inflate = null;
+        callback(err);
+        return;
+      }
+
+      const data = bufferUtil.concat(
+        this._inflate[kBuffers],
+        this._inflate[kTotalLength]
+      );
+
+      if (fin && this.params[`${endpoint}_no_context_takeover`]) {
+        this._inflate.close();
+        this._inflate = null;
+      } else {
+        this._inflate[kTotalLength] = 0;
+        this._inflate[kBuffers] = [];
+      }
+
+      callback(null, data);
+    });
+  }
+
+  /**
+   * Compress data.
+   *
+   * @param {Buffer} data Data to compress
+   * @param {Boolean} fin Specifies whether or not this is the last fragment
+   * @param {Function} callback Callback
+   * @private
+   */
+  _compress(data, fin, callback) {
+    const endpoint = this._isServer ? 'server' : 'client';
+
+    if (!this._deflate) {
+      const key = `${endpoint}_max_window_bits`;
+      const windowBits =
+        typeof this.params[key] !== 'number'
+          ? zlib.Z_DEFAULT_WINDOWBITS
+          : this.params[key];
+
+      this._deflate = zlib.createDeflateRaw({
+        ...this._options.zlibDeflateOptions,
+        windowBits
+      });
+
+      this._deflate[kTotalLength] = 0;
+      this._deflate[kBuffers] = [];
+
+      //
+      // An `'error'` event is emitted, only on Node.js < 10.0.0, if the
+      // `zlib.DeflateRaw` instance is closed while data is being processed.
+      // This can happen if `PerMessageDeflate#cleanup()` is called at the wrong
+      // time due to an abnormal WebSocket closure.
+      //
+      this._deflate.on('error', NOOP);
+      this._deflate.on('data', deflateOnData);
+    }
+
+    this._deflate[kCallback] = callback;
+
+    this._deflate.write(data);
+    this._deflate.flush(zlib.Z_SYNC_FLUSH, () => {
+      if (!this._deflate) {
+        //
+        // The deflate stream was closed while data was being processed.
+        //
+        return;
+      }
+
+      let data = bufferUtil.concat(
+        this._deflate[kBuffers],
+        this._deflate[kTotalLength]
+      );
+
+      if (fin) data = data.slice(0, data.length - 4);
+
+      //
+      // Ensure that the callback will not be called again in
+      // `PerMessageDeflate#cleanup()`.
+      //
+      this._deflate[kCallback] = null;
+
+      if (fin && this.params[`${endpoint}_no_context_takeover`]) {
+        this._deflate.close();
+        this._deflate = null;
+      } else {
+        this._deflate[kTotalLength] = 0;
+        this._deflate[kBuffers] = [];
+      }
+
+      callback(null, data);
+    });
+  }
+}
+
+module.exports = PerMessageDeflate;
+
+/**
+ * The listener of the `zlib.DeflateRaw` stream `'data'` event.
+ *
+ * @param {Buffer} chunk A chunk of data
+ * @private
+ */
+function deflateOnData(chunk) {
+  this[kBuffers].push(chunk);
+  this[kTotalLength] += chunk.length;
+}
+
+/**
+ * The listener of the `zlib.InflateRaw` stream `'data'` event.
+ *
+ * @param {Buffer} chunk A chunk of data
+ * @private
+ */
+function inflateOnData(chunk) {
+  this[kTotalLength] += chunk.length;
+
+  if (
+    this[kPerMessageDeflate]._maxPayload < 1 ||
+    this[kTotalLength] <= this[kPerMessageDeflate]._maxPayload
+  ) {
+    this[kBuffers].push(chunk);
+    return;
+  }
+
+  this[kError] = new RangeError('Max payload size exceeded');
+  this[kError][kStatusCode] = 1009;
+  this.removeListener('data', inflateOnData);
+  this.reset();
+}
+
+/**
+ * The listener of the `zlib.InflateRaw` stream `'error'` event.
+ *
+ * @param {Error} err The emitted error
+ * @private
+ */
+function inflateOnError(err) {
+  //
+  // There is no need to call `Zlib#close()` as the handle is automatically
+  // closed when an error is emitted.
+  //
+  this[kPerMessageDeflate]._inflate = null;
+  err[kStatusCode] = 1007;
+  this[kCallback](err);
+}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/receiver.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/receiver.js
new file mode 100644
index 00000000000..65a5ab45f6e
--- /dev/null
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/receiver.js
@@ -0,0 +1,507 @@
+'use strict';
+
+const { Writable } = require('stream');
+
+const PerMessageDeflate = require('./permessage-deflate');
+const {
+  BINARY_TYPES,
+  EMPTY_BUFFER,
+  kStatusCode,
+  kWebSocket
+} = require('./constants');
+const { concat, toArrayBuffer, unmask } = require('./buffer-util');
+const { isValidStatusCode, isValidUTF8 } = require('./validation');
+
+const GET_INFO = 0;
+const GET_PAYLOAD_LENGTH_16 = 1;
+const GET_PAYLOAD_LENGTH_64 = 2;
+const GET_MASK = 3;
+const GET_DATA = 4;
+const INFLATING = 5;
+
+/**
+ * HyBi Receiver implementation.
+ *
+ * @extends stream.Writable
+ */
+class Receiver extends Writable {
+  /**
+   * Creates a Receiver instance.
+   *
+   * @param {String} [binaryType=nodebuffer] The type for binary data
+   * @param {Object} [extensions] An object containing the negotiated extensions
+   * @param {Boolean} [isServer=false] Specifies whether to operate in client or
+   *     server mode
+   * @param {Number} [maxPayload=0] The maximum allowed message length
+   */
+  constructor(binaryType, extensions, isServer, maxPayload) {
+    super();
+
+    this._binaryType = binaryType || BINARY_TYPES[0];
+    this[kWebSocket] = undefined;
+    this._extensions = extensions || {};
+    this._isServer = !!isServer;
+    this._maxPayload = maxPayload | 0;
+
+    this._bufferedBytes = 0;
+    this._buffers = [];
+
+    this._compressed = false;
+    this._payloadLength = 0;
+    this._mask = undefined;
+    this._fragmented = 0;
+    this._masked = false;
+    this._fin = false;
+    this._opcode = 0;
+
+    this._totalPayloadLength = 0;
+    this._messageLength = 0;
+    this._fragments = [];
+
+    this._state = GET_INFO;
+    this._loop = false;
+  }
+
+  /**
+   * Implements `Writable.prototype._write()`.
+   *
+   * @param {Buffer} chunk The chunk of data to write
+   * @param {String} encoding The character encoding of `chunk`
+   * @param {Function} cb Callback
+   * @private
+   */
+  _write(chunk, encoding, cb) {
+    if (this._opcode === 0x08 && this._state == GET_INFO) return cb();
+
+    this._bufferedBytes += chunk.length;
+    this._buffers.push(chunk);
+    this.startLoop(cb);
+  }
+
+  /**
+   * Consumes `n` bytes from the buffered data.
+   *
+   * @param {Number} n The number of bytes to consume
+   * @return {Buffer} The consumed bytes
+   * @private
+   */
+  consume(n) {
+    this._bufferedBytes -= n;
+
+    if (n === this._buffers[0].length) return this._buffers.shift();
+
+    if (n < this._buffers[0].length) {
+      const buf = this._buffers[0];
+      this._buffers[0] = buf.slice(n);
+      return buf.slice(0, n);
+    }
+
+    const dst = Buffer.allocUnsafe(n);
+
+    do {
+      const buf = this._buffers[0];
+      const offset = dst.length - n;
+
+      if (n >= buf.length) {
+        dst.set(this._buffers.shift(), offset);
+      } else {
+        dst.set(new Uint8Array(buf.buffer, buf.byteOffset, n), offset);
+        this._buffers[0] = buf.slice(n);
+      }
+
+      n -= buf.length;
+    } while (n > 0);
+
+    return dst;
+  }
+
+  /**
+   * Starts the parsing loop.
+   *
+   * @param {Function} cb Callback
+   * @private
+   */
+  startLoop(cb) {
+    let err;
+    this._loop = true;
+
+    do {
+      switch (this._state) {
+        case GET_INFO:
+          err = this.getInfo();
+          break;
+        case GET_PAYLOAD_LENGTH_16:
+          err = this.getPayloadLength16();
+          break;
+        case GET_PAYLOAD_LENGTH_64:
+          err = this.getPayloadLength64();
+          break;
+        case GET_MASK:
+          this.getMask();
+          break;
+        case GET_DATA:
+          err = this.getData(cb);
+          break;
+        default:
+          // `INFLATING`
+          this._loop = false;
+          return;
+      }
+    } while (this._loop);
+
+    cb(err);
+  }
+
+  /**
+   * Reads the first two bytes of a frame.
+   *
+   * @return {(RangeError|undefined)} A possible error
+   * @private
+   */
+  getInfo() {
+    if (this._bufferedBytes < 2) {
+      this._loop = false;
+      return;
+    }
+
+    const buf = this.consume(2);
+
+    if ((buf[0] & 0x30) !== 0x00) {
+      this._loop = false;
+      return error(RangeError, 'RSV2 and RSV3 must be clear', true, 1002);
+    }
+
+    const compressed = (buf[0] & 0x40) === 0x40;
+
+    if (compressed && !this._extensions[PerMessageDeflate.extensionName]) {
+      this._loop = false;
+      return error(RangeError, 'RSV1 must be clear', true, 1002);
+    }
+
+    this._fin = (buf[0] & 0x80) === 0x80;
+    this._opcode = buf[0] & 0x0f;
+    this._payloadLength = buf[1] & 0x7f;
+
+    if (this._opcode === 0x00) {
+      if (compressed) {
+        this._loop = false;
+        return error(RangeError, 'RSV1 must be clear', true, 1002);
+      }
+
+      if (!this._fragmented) {
+        this._loop = false;
+        return error(RangeError, 'invalid opcode 0', true, 1002);
+      }
+
+      this._opcode = this._fragmented;
+    } else if (this._opcode === 0x01 || this._opcode === 0x02) {
+      if (this._fragmented) {
+        this._loop = false;
+        return error(RangeError, `invalid opcode ${this._opcode}`, true, 1002);
+      }
+
+      this._compressed = compressed;
+    } else if (this._opcode > 0x07 && this._opcode < 0x0b) {
+      if (!this._fin) {
+        this._loop = false;
+        return error(RangeError, 'FIN must be set', true, 1002);
+      }
+
+      if (compressed) {
+        this._loop = false;
+        return error(RangeError, 'RSV1 must be clear', true, 1002);
+      }
+
+      if (this._payloadLength > 0x7d) {
+        this._loop = false;
+        return error(
+          RangeError,
+          `invalid payload length ${this._payloadLength}`,
+          true,
+          1002
+        );
+      }
+    } else {
+      this._loop = false;
+      return error(RangeError, `invalid opcode ${this._opcode}`, true, 1002);
+    }
+
+    if (!this._fin && !this._fragmented) this._fragmented = this._opcode;
+    this._masked = (buf[1] & 0x80) === 0x80;
+
+    if (this._isServer) {
+      if (!this._masked) {
+        this._loop = false;
+        return error(RangeError, 'MASK must be set', true, 1002);
+      }
+    } else if (this._masked) {
+      this._loop = false;
+      return error(RangeError, 'MASK must be clear', true, 1002);
+    }
+
+    if (this._payloadLength === 126) this._state = GET_PAYLOAD_LENGTH_16;
+    else if (this._payloadLength === 127) this._state = GET_PAYLOAD_LENGTH_64;
+    else return this.haveLength();
+  }
+
+  /**
+   * Gets extended payload length (7+16).
+   *
+   * @return {(RangeError|undefined)} A possible error
+   * @private
+   */
+  getPayloadLength16() {
+    if (this._bufferedBytes < 2) {
+      this._loop = false;
+      return;
+    }
+
+    this._payloadLength = this.consume(2).readUInt16BE(0);
+    return this.haveLength();
+  }
+
+  /**
+   * Gets extended payload length (7+64).
+   *
+   * @return {(RangeError|undefined)} A possible error
+   * @private
+   */
+  getPayloadLength64() {
+    if (this._bufferedBytes < 8) {
+      this._loop = false;
+      return;
+    }
+
+    const buf = this.consume(8);
+    const num = buf.readUInt32BE(0);
+
+    //
+    // The maximum safe integer in JavaScript is 2^53 - 1. An error is returned
+    // if payload length is greater than this number.
+    //
+    if (num > Math.pow(2, 53 - 32) - 1) {
+      this._loop = false;
+      return error(
+        RangeError,
+        'Unsupported WebSocket frame: payload length > 2^53 - 1',
+        false,
+        1009
+      );
+    }
+
+    this._payloadLength = num * Math.pow(2, 32) + buf.readUInt32BE(4);
+    return this.haveLength();
+  }
+
+  /**
+   * Payload length has been read.
+   *
+   * @return {(RangeError|undefined)} A possible error
+   * @private
+   */
+  haveLength() {
+    if (this._payloadLength && this._opcode < 0x08) {
+      this._totalPayloadLength += this._payloadLength;
+      if (this._totalPayloadLength > this._maxPayload && this._maxPayload > 0) {
+        this._loop = false;
+        return error(RangeError, 'Max payload size exceeded', false, 1009);
+      }
+    }
+
+    if (this._masked) this._state = GET_MASK;
+    else this._state = GET_DATA;
+  }
+
+  /**
+   * Reads mask bytes.
+   *
+   * @private
+   */
+  getMask() {
+    if (this._bufferedBytes < 4) {
+      this._loop = false;
+      return;
+    }
+
+    this._mask = this.consume(4);
+    this._state = GET_DATA;
+  }
+
+  /**
+   * Reads data bytes.
+   *
+   * @param {Function} cb Callback
+   * @return {(Error|RangeError|undefined)} A possible error
+   * @private
+   */
+  getData(cb) {
+    let data = EMPTY_BUFFER;
+
+    if (this._payloadLength) {
+      if (this._bufferedBytes < this._payloadLength) {
+        this._loop = false;
+        return;
+      }
+
+      data = this.consume(this._payloadLength);
+      if (this._masked) unmask(data, this._mask);
+    }
+
+    if (this._opcode > 0x07) return this.controlMessage(data);
+
+    if (this._compressed) {
+      this._state = INFLATING;
+      this.decompress(data, cb);
+      return;
+    }
+
+    if (data.length) {
+      //
+      // This message is not compressed so its lenght is the sum of the payload
+      // length of all fragments.
+      //
+      this._messageLength = this._totalPayloadLength;
+      this._fragments.push(data);
+    }
+
+    return this.dataMessage();
+  }
+
+  /**
+   * Decompresses data.
+   *
+   * @param {Buffer} data Compressed data
+   * @param {Function} cb Callback
+   * @private
+   */
+  decompress(data, cb) {
+    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];
+
+    perMessageDeflate.decompress(data, this._fin, (err, buf) => {
+      if (err) return cb(err);
+
+      if (buf.length) {
+        this._messageLength += buf.length;
+        if (this._messageLength > this._maxPayload && this._maxPayload > 0) {
+          return cb(
+            error(RangeError, 'Max payload size exceeded', false, 1009)
+          );
+        }
+
+        this._fragments.push(buf);
+      }
+
+      const er = this.dataMessage();
+      if (er) return cb(er);
+
+      this.startLoop(cb);
+    });
+  }
+
+  /**
+   * Handles a data message.
+   *
+   * @return {(Error|undefined)} A possible error
+   * @private
+   */
+  dataMessage() {
+    if (this._fin) {
+      const messageLength = this._messageLength;
+      const fragments = this._fragments;
+
+      this._totalPayloadLength = 0;
+      this._messageLength = 0;
+      this._fragmented = 0;
+      this._fragments = [];
+
+      if (this._opcode === 2) {
+        let data;
+
+        if (this._binaryType === 'nodebuffer') {
+          data = concat(fragments, messageLength);
+        } else if (this._binaryType === 'arraybuffer') {
+          data = toArrayBuffer(concat(fragments, messageLength));
+        } else {
+          data = fragments;
+        }
+
+        this.emit('message', data);
+      } else {
+        const buf = concat(fragments, messageLength);
+
+        if (!isValidUTF8(buf)) {
+          this._loop = false;
+          return error(Error, 'invalid UTF-8 sequence', true, 1007);
+        }
+
+        this.emit('message', buf.toString());
+      }
+    }
+
+    this._state = GET_INFO;
+  }
+
+  /**
+   * Handles a control message.
+   *
+   * @param {Buffer} data Data to handle
+   * @return {(Error|RangeError|undefined)} A possible error
+   * @private
+   */
+  controlMessage(data) {
+    if (this._opcode === 0x08) {
+      this._loop = false;
+
+      if (data.length === 0) {
+        this.emit('conclude', 1005, '');
+        this.end();
+      } else if (data.length === 1) {
+        return error(RangeError, 'invalid payload length 1', true, 1002);
+      } else {
+        const code = data.readUInt16BE(0);
+
+        if (!isValidStatusCode(code)) {
+          return error(RangeError, `invalid status code ${code}`, true, 1002);
+        }
+
+        const buf = data.slice(2);
+
+        if (!isValidUTF8(buf)) {
+          return error(Error, 'invalid UTF-8 sequence', true, 1007);
+        }
+
+        this.emit('conclude', code, buf.toString());
+        this.end();
+      }
+    } else if (this._opcode === 0x09) {
+      this.emit('ping', data);
+    } else {
+      this.emit('pong', data);
+    }
+
+    this._state = GET_INFO;
+  }
+}
+
+module.exports = Receiver;
+
+/**
+ * Builds an error object.
+ *
+ * @param {(Error|RangeError)} ErrorCtor The error constructor
+ * @param {String} message The error message
+ * @param {Boolean} prefix Specifies whether or not to add a default prefix to
+ *     `message`
+ * @param {Number} statusCode The status code
+ * @return {(Error|RangeError)} The error
+ * @private
+ */
+function error(ErrorCtor, message, prefix, statusCode) {
+  const err = new ErrorCtor(
+    prefix ? `Invalid WebSocket frame: ${message}` : message
+  );
+
+  Error.captureStackTrace(err, error);
+  err[kStatusCode] = statusCode;
+  return err;
+}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/sender.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/sender.js
new file mode 100644
index 00000000000..ad71e1950dc
--- /dev/null
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/sender.js
@@ -0,0 +1,405 @@
+'use strict';
+
+const { randomFillSync } = require('crypto');
+
+const PerMessageDeflate = require('./permessage-deflate');
+const { EMPTY_BUFFER } = require('./constants');
+const { isValidStatusCode } = require('./validation');
+const { mask: applyMask, toBuffer } = require('./buffer-util');
+
+const mask = Buffer.alloc(4);
+
+/**
+ * HyBi Sender implementation.
+ */
+class Sender {
+  /**
+   * Creates a Sender instance.
+   *
+   * @param {net.Socket} socket The connection socket
+   * @param {Object} [extensions] An object containing the negotiated extensions
+   */
+  constructor(socket, extensions) {
+    this._extensions = extensions || {};
+    this._socket = socket;
+
+    this._firstFragment = true;
+    this._compress = false;
+
+    this._bufferedBytes = 0;
+    this._deflating = false;
+    this._queue = [];
+  }
+
+  /**
+   * Frames a piece of data according to the HyBi WebSocket protocol.
+   *
+   * @param {Buffer} data The data to frame
+   * @param {Object} options Options object
+   * @param {Number} options.opcode The opcode
+   * @param {Boolean} [options.readOnly=false] Specifies whether `data` can be
+   *     modified
+   * @param {Boolean} [options.fin=false] Specifies whether or not to set the
+   *     FIN bit
+   * @param {Boolean} [options.mask=false] Specifies whether or not to mask
+   *     `data`
+   * @param {Boolean} [options.rsv1=false] Specifies whether or not to set the
+   *     RSV1 bit
+   * @return {Buffer[]} The framed data as a list of `Buffer` instances
+   * @public
+   */
+  static frame(data, options) {
+    const merge = options.mask && options.readOnly;
+    let offset = options.mask ? 6 : 2;
+    let payloadLength = data.length;
+
+    if (data.length >= 65536) {
+      offset += 8;
+      payloadLength = 127;
+    } else if (data.length > 125) {
+      offset += 2;
+      payloadLength = 126;
+    }
+
+    const target = Buffer.allocUnsafe(merge ? data.length + offset : offset);
+
+    target[0] = options.fin ? options.opcode | 0x80 : options.opcode;
+    if (options.rsv1) target[0] |= 0x40;
+
+    target[1] = payloadLength;
+
+    if (payloadLength === 126) {
+      target.writeUInt16BE(data.length, 2);
+    } else if (payloadLength === 127) {
+      target.writeUInt32BE(0, 2);
+      target.writeUInt32BE(data.length, 6);
+    }
+
+    if (!options.mask) return [target, data];
+
+    randomFillSync(mask, 0, 4);
+
+    target[1] |= 0x80;
+    target[offset - 4] = mask[0];
+    target[offset - 3] = mask[1];
+    target[offset - 2] = mask[2];
+    target[offset - 1] = mask[3];
+
+    if (merge) {
+      applyMask(data, mask, target, offset, data.length);
+      return [target];
+    }
+
+    applyMask(data, mask, data, 0, data.length);
+    return [target, data];
+  }
+
+  /**
+   * Sends a close message to the other peer.
+   *
+   * @param {Number} [code] The status code component of the body
+   * @param {String} [data] The message component of the body
+   * @param {Boolean} [mask=false] Specifies whether or not to mask the message
+   * @param {Function} [cb] Callback
+   * @public
+   */
+  close(code, data, mask, cb) {
+    let buf;
+
+    if (code === undefined) {
+      buf = EMPTY_BUFFER;
+    } else if (typeof code !== 'number' || !isValidStatusCode(code)) {
+      throw new TypeError('First argument must be a valid error code number');
+    } else if (data === undefined || data === '') {
+      buf = Buffer.allocUnsafe(2);
+      buf.writeUInt16BE(code, 0);
+    } else {
+      const length = Buffer.byteLength(data);
+
+      if (length > 123) {
+        throw new RangeError('The message must not be greater than 123 bytes');
+      }
+
+      buf = Buffer.allocUnsafe(2 + length);
+      buf.writeUInt16BE(code, 0);
+      buf.write(data, 2);
+    }
+
+    if (this._deflating) {
+      this.enqueue([this.doClose, buf, mask, cb]);
+    } else {
+      this.doClose(buf, mask, cb);
+    }
+  }
+
+  /**
+   * Frames and sends a close message.
+   *
+   * @param {Buffer} data The message to send
+   * @param {Boolean} [mask=false] Specifies whether or not to mask `data`
+   * @param {Function} [cb] Callback
+   * @private
+   */
+  doClose(data, mask, cb) {
+    this.sendFrame(
+      Sender.frame(data, {
+        fin: true,
+        rsv1: false,
+        opcode: 0x08,
+        mask,
+        readOnly: false
+      }),
+      cb
+    );
+  }
+
+  /**
+   * Sends a ping message to the other peer.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} [mask=false] Specifies whether or not to mask `data`
+   * @param {Function} [cb] Callback
+   * @public
+   */
+  ping(data, mask, cb) {
+    const buf = toBuffer(data);
+
+    if (buf.length > 125) {
+      throw new RangeError('The data size must not be greater than 125 bytes');
+    }
+
+    if (this._deflating) {
+      this.enqueue([this.doPing, buf, mask, toBuffer.readOnly, cb]);
+    } else {
+      this.doPing(buf, mask, toBuffer.readOnly, cb);
+    }
+  }
+
+  /**
+   * Frames and sends a ping message.
+   *
+   * @param {Buffer} data The message to send
+   * @param {Boolean} [mask=false] Specifies whether or not to mask `data`
+   * @param {Boolean} [readOnly=false] Specifies whether `data` can be modified
+   * @param {Function} [cb] Callback
+   * @private
+   */
+  doPing(data, mask, readOnly, cb) {
+    this.sendFrame(
+      Sender.frame(data, {
+        fin: true,
+        rsv1: false,
+        opcode: 0x09,
+        mask,
+        readOnly
+      }),
+      cb
+    );
+  }
+
+  /**
+   * Sends a pong message to the other peer.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} [mask=false] Specifies whether or not to mask `data`
+   * @param {Function} [cb] Callback
+   * @public
+   */
+  pong(data, mask, cb) {
+    const buf = toBuffer(data);
+
+    if (buf.length > 125) {
+      throw new RangeError('The data size must not be greater than 125 bytes');
+    }
+
+    if (this._deflating) {
+      this.enqueue([this.doPong, buf, mask, toBuffer.readOnly, cb]);
+    } else {
+      this.doPong(buf, mask, toBuffer.readOnly, cb);
+    }
+  }
+
+  /**
+   * Frames and sends a pong message.
+   *
+   * @param {Buffer} data The message to send
+   * @param {Boolean} [mask=false] Specifies whether or not to mask `data`
+   * @param {Boolean} [readOnly=false] Specifies whether `data` can be modified
+   * @param {Function} [cb] Callback
+   * @private
+   */
+  doPong(data, mask, readOnly, cb) {
+    this.sendFrame(
+      Sender.frame(data, {
+        fin: true,
+        rsv1: false,
+        opcode: 0x0a,
+        mask,
+        readOnly
+      }),
+      cb
+    );
+  }
+
+  /**
+   * Sends a data message to the other peer.
+   *
+   * @param {*} data The message to send
+   * @param {Object} options Options object
+   * @param {Boolean} [options.compress=false] Specifies whether or not to
+   *     compress `data`
+   * @param {Boolean} [options.binary=false] Specifies whether `data` is binary
+   *     or text
+   * @param {Boolean} [options.fin=false] Specifies whether the fragment is the
+   *     last one
+   * @param {Boolean} [options.mask=false] Specifies whether or not to mask
+   *     `data`
+   * @param {Function} [cb] Callback
+   * @public
+   */
+  send(data, options, cb) {
+    const buf = toBuffer(data);
+    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];
+    let opcode = options.binary ? 2 : 1;
+    let rsv1 = options.compress;
+
+    if (this._firstFragment) {
+      this._firstFragment = false;
+      if (rsv1 && perMessageDeflate) {
+        rsv1 = buf.length >= perMessageDeflate._threshold;
+      }
+      this._compress = rsv1;
+    } else {
+      rsv1 = false;
+      opcode = 0;
+    }
+
+    if (options.fin) this._firstFragment = true;
+
+    if (perMessageDeflate) {
+      const opts = {
+        fin: options.fin,
+        rsv1,
+        opcode,
+        mask: options.mask,
+        readOnly: toBuffer.readOnly
+      };
+
+      if (this._deflating) {
+        this.enqueue([this.dispatch, buf, this._compress, opts, cb]);
+      } else {
+        this.dispatch(buf, this._compress, opts, cb);
+      }
+    } else {
+      this.sendFrame(
+        Sender.frame(buf, {
+          fin: options.fin,
+          rsv1: false,
+          opcode,
+          mask: options.mask,
+          readOnly: toBuffer.readOnly
+        }),
+        cb
+      );
+    }
+  }
+
+  /**
+   * Dispatches a data message.
+   *
+   * @param {Buffer} data The message to send
+   * @param {Boolean} [compress=false] Specifies whether or not to compress
+   *     `data`
+   * @param {Object} options Options object
+   * @param {Number} options.opcode The opcode
+   * @param {Boolean} [options.readOnly=false] Specifies whether `data` can be
+   *     modified
+   * @param {Boolean} [options.fin=false] Specifies whether or not to set the
+   *     FIN bit
+   * @param {Boolean} [options.mask=false] Specifies whether or not to mask
+   *     `data`
+   * @param {Boolean} [options.rsv1=false] Specifies whether or not to set the
+   *     RSV1 bit
+   * @param {Function} [cb] Callback
+   * @private
+   */
+  dispatch(data, compress, options, cb) {
+    if (!compress) {
+      this.sendFrame(Sender.frame(data, options), cb);
+      return;
+    }
+
+    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];
+
+    this._bufferedBytes += data.length;
+    this._deflating = true;
+    perMessageDeflate.compress(data, options.fin, (_, buf) => {
+      if (this._socket.destroyed) {
+        const err = new Error(
+          'The socket was closed while data was being compressed'
+        );
+
+        if (typeof cb === 'function') cb(err);
+
+        for (let i = 0; i < this._queue.length; i++) {
+          const callback = this._queue[i][4];
+
+          if (typeof callback === 'function') callback(err);
+        }
+
+        return;
+      }
+
+      this._bufferedBytes -= data.length;
+      this._deflating = false;
+      options.readOnly = false;
+      this.sendFrame(Sender.frame(buf, options), cb);
+      this.dequeue();
+    });
+  }
+
+  /**
+   * Executes queued send operations.
+   *
+   * @private
+   */
+  dequeue() {
+    while (!this._deflating && this._queue.length) {
+      const params = this._queue.shift();
+
+      this._bufferedBytes -= params[1].length;
+      Reflect.apply(params[0], this, params.slice(1));
+    }
+  }
+
+  /**
+   * Enqueues a send operation.
+   *
+   * @param {Array} params Send operation parameters.
+   * @private
+   */
+  enqueue(params) {
+    this._bufferedBytes += params[1].length;
+    this._queue.push(params);
+  }
+
+  /**
+   * Sends a frame.
+   *
+   * @param {Buffer[]} list The frame to send
+   * @param {Function} [cb] Callback
+   * @private
+   */
+  sendFrame(list, cb) {
+    if (list.length === 2) {
+      this._socket.cork();
+      this._socket.write(list[0]);
+      this._socket.write(list[1], cb);
+      this._socket.uncork();
+    } else {
+      this._socket.write(list[0], cb);
+    }
+  }
+}
+
+module.exports = Sender;
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/stream.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/stream.js
new file mode 100644
index 00000000000..604cf366b30
--- /dev/null
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/stream.js
@@ -0,0 +1,165 @@
+'use strict';
+
+const { Duplex } = require('stream');
+
+/**
+ * Emits the `'close'` event on a stream.
+ *
+ * @param {stream.Duplex} The stream.
+ * @private
+ */
+function emitClose(stream) {
+  stream.emit('close');
+}
+
+/**
+ * The listener of the `'end'` event.
+ *
+ * @private
+ */
+function duplexOnEnd() {
+  if (!this.destroyed && this._writableState.finished) {
+    this.destroy();
+  }
+}
+
+/**
+ * The listener of the `'error'` event.
+ *
+ * @param {Error} err The error
+ * @private
+ */
+function duplexOnError(err) {
+  this.removeListener('error', duplexOnError);
+  this.destroy();
+  if (this.listenerCount('error') === 0) {
+    // Do not suppress the throwing behavior.
+    this.emit('error', err);
+  }
+}
+
+/**
+ * Wraps a `WebSocket` in a duplex stream.
+ *
+ * @param {WebSocket} ws The `WebSocket` to wrap
+ * @param {Object} [options] The options for the `Duplex` constructor
+ * @return {stream.Duplex} The duplex stream
+ * @public
+ */
+function createWebSocketStream(ws, options) {
+  let resumeOnReceiverDrain = true;
+
+  function receiverOnDrain() {
+    if (resumeOnReceiverDrain) ws._socket.resume();
+  }
+
+  if (ws.readyState === ws.CONNECTING) {
+    ws.once('open', function open() {
+      ws._receiver.removeAllListeners('drain');
+      ws._receiver.on('drain', receiverOnDrain);
+    });
+  } else {
+    ws._receiver.removeAllListeners('drain');
+    ws._receiver.on('drain', receiverOnDrain);
+  }
+
+  const duplex = new Duplex({
+    ...options,
+    autoDestroy: false,
+    emitClose: false,
+    objectMode: false,
+    writableObjectMode: false
+  });
+
+  ws.on('message', function message(msg) {
+    if (!duplex.push(msg)) {
+      resumeOnReceiverDrain = false;
+      ws._socket.pause();
+    }
+  });
+
+  ws.once('error', function error(err) {
+    if (duplex.destroyed) return;
+
+    duplex.destroy(err);
+  });
+
+  ws.once('close', function close() {
+    if (duplex.destroyed) return;
+
+    duplex.push(null);
+  });
+
+  duplex._destroy = function (err, callback) {
+    if (ws.readyState === ws.CLOSED) {
+      callback(err);
+      process.nextTick(emitClose, duplex);
+      return;
+    }
+
+    let called = false;
+
+    ws.once('error', function error(err) {
+      called = true;
+      callback(err);
+    });
+
+    ws.once('close', function close() {
+      if (!called) callback(err);
+      process.nextTick(emitClose, duplex);
+    });
+    ws.terminate();
+  };
+
+  duplex._final = function (callback) {
+    if (ws.readyState === ws.CONNECTING) {
+      ws.once('open', function open() {
+        duplex._final(callback);
+      });
+      return;
+    }
+
+    // If the value of the `_socket` property is `null` it means that `ws` is a
+    // client websocket and the handshake failed. In fact, when this happens, a
+    // socket is never assigned to the websocket. Wait for the `'error'` event
+    // that will be emitted by the websocket.
+    if (ws._socket === null) return;
+
+    if (ws._socket._writableState.finished) {
+      callback();
+      if (duplex._readableState.endEmitted) duplex.destroy();
+    } else {
+      ws._socket.once('finish', function finish() {
+        // `duplex` is not destroyed here because the `'end'` event will be
+        // emitted on `duplex` after this `'finish'` event. The EOF signaling
+        // `null` chunk is, in fact, pushed when the websocket emits `'close'`.
+        callback();
+      });
+      ws.close();
+    }
+  };
+
+  duplex._read = function () {
+    if (ws.readyState === ws.OPEN && !resumeOnReceiverDrain) {
+      resumeOnReceiverDrain = true;
+      if (!ws._receiver._writableState.needDrain) ws._socket.resume();
+    }
+  };
+
+  duplex._write = function (chunk, encoding, callback) {
+    if (ws.readyState === ws.CONNECTING) {
+      ws.once('open', function open() {
+        duplex._write(chunk, encoding, callback);
+      });
+      return;
+    }
+
+    ws.send(chunk, callback);
+  };
+
+  duplex.on('end', duplexOnEnd);
+  duplex.on('error', duplexOnError);
+  return duplex;
+}
+
+module.exports = createWebSocketStream;
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/validation.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/validation.js
new file mode 100644
index 00000000000..32db5a570ae
--- /dev/null
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/validation.js
@@ -0,0 +1,30 @@
+'use strict';
+
+try {
+  const isValidUTF8 = require('utf-8-validate');
+
+  exports.isValidUTF8 =
+    typeof isValidUTF8 === 'object'
+      ? isValidUTF8.Validation.isValidUTF8 // utf-8-validate@<3.0.0
+      : isValidUTF8;
+} catch (e) /* istanbul ignore next */ {
+  exports.isValidUTF8 = () => true;
+}
+
+/**
+ * Checks if a status code is allowed in a close frame.
+ *
+ * @param {Number} code The status code
+ * @return {Boolean} `true` if the status code is valid, else `false`
+ * @public
+ */
+exports.isValidStatusCode = (code) => {
+  return (
+    (code >= 1000 &&
+      code <= 1014 &&
+      code !== 1004 &&
+      code !== 1005 &&
+      code !== 1006) ||
+    (code >= 3000 && code <= 4999)
+  );
+};
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/websocket-server.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/websocket-server.js
new file mode 100644
index 00000000000..be481a0f065
--- /dev/null
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/websocket-server.js
@@ -0,0 +1,406 @@
+'use strict';
+
+const EventEmitter = require('events');
+const { createHash } = require('crypto');
+const { createServer, STATUS_CODES } = require('http');
+
+const PerMessageDeflate = require('./permessage-deflate');
+const WebSocket = require('./websocket');
+const { format, parse } = require('./extension');
+const { GUID, kWebSocket } = require('./constants');
+
+const keyRegex = /^[+/0-9A-Za-z]{22}==$/;
+
+/**
+ * Class representing a WebSocket server.
+ *
+ * @extends EventEmitter
+ */
+class WebSocketServer extends EventEmitter {
+  /**
+   * Create a `WebSocketServer` instance.
+   *
+   * @param {Object} options Configuration options
+   * @param {Number} [options.backlog=511] The maximum length of the queue of
+   *     pending connections
+   * @param {Boolean} [options.clientTracking=true] Specifies whether or not to
+   *     track clients
+   * @param {Function} [options.handleProtocols] A hook to handle protocols
+   * @param {String} [options.host] The hostname where to bind the server
+   * @param {Number} [options.maxPayload=104857600] The maximum allowed message
+   *     size
+   * @param {Boolean} [options.noServer=false] Enable no server mode
+   * @param {String} [options.path] Accept only connections matching this path
+   * @param {(Boolean|Object)} [options.perMessageDeflate=false] Enable/disable
+   *     permessage-deflate
+   * @param {Number} [options.port] The port where to bind the server
+   * @param {http.Server} [options.server] A pre-created HTTP/S server to use
+   * @param {Function} [options.verifyClient] A hook to reject connections
+   * @param {Function} [callback] A listener for the `listening` event
+   */
+  constructor(options, callback) {
+    super();
+
+    options = {
+      maxPayload: 100 * 1024 * 1024,
+      perMessageDeflate: false,
+      handleProtocols: null,
+      clientTracking: true,
+      verifyClient: null,
+      noServer: false,
+      backlog: null, // use default (511 as implemented in net.js)
+      server: null,
+      host: null,
+      path: null,
+      port: null,
+      ...options
+    };
+
+    if (options.port == null && !options.server && !options.noServer) {
+      throw new TypeError(
+        'One of the "port", "server", or "noServer" options must be specified'
+      );
+    }
+
+    if (options.port != null) {
+      this._server = createServer((req, res) => {
+        const body = STATUS_CODES[426];
+
+        res.writeHead(426, {
+          'Content-Length': body.length,
+          'Content-Type': 'text/plain'
+        });
+        res.end(body);
+      });
+      this._server.listen(
+        options.port,
+        options.host,
+        options.backlog,
+        callback
+      );
+    } else if (options.server) {
+      this._server = options.server;
+    }
+
+    if (this._server) {
+      const emitConnection = this.emit.bind(this, 'connection');
+
+      this._removeListeners = addListeners(this._server, {
+        listening: this.emit.bind(this, 'listening'),
+        error: this.emit.bind(this, 'error'),
+        upgrade: (req, socket, head) => {
+          this.handleUpgrade(req, socket, head, emitConnection);
+        }
+      });
+    }
+
+    if (options.perMessageDeflate === true) options.perMessageDeflate = {};
+    if (options.clientTracking) this.clients = new Set();
+    this.options = options;
+  }
+
+  /**
+   * Returns the bound address, the address family name, and port of the server
+   * as reported by the operating system if listening on an IP socket.
+   * If the server is listening on a pipe or UNIX domain socket, the name is
+   * returned as a string.
+   *
+   * @return {(Object|String|null)} The address of the server
+   * @public
+   */
+  address() {
+    if (this.options.noServer) {
+      throw new Error('The server is operating in "noServer" mode');
+    }
+
+    if (!this._server) return null;
+    return this._server.address();
+  }
+
+  /**
+   * Close the server.
+   *
+   * @param {Function} [cb] Callback
+   * @public
+   */
+  close(cb) {
+    if (cb) this.once('close', cb);
+
+    //
+    // Terminate all associated clients.
+    //
+    if (this.clients) {
+      for (const client of this.clients) client.terminate();
+    }
+
+    const server = this._server;
+
+    if (server) {
+      this._removeListeners();
+      this._removeListeners = this._server = null;
+
+      //
+      // Close the http server if it was internally created.
+      //
+      if (this.options.port != null) {
+        server.close(() => this.emit('close'));
+        return;
+      }
+    }
+
+    process.nextTick(emitClose, this);
+  }
+
+  /**
+   * See if a given request should be handled by this server instance.
+   *
+   * @param {http.IncomingMessage} req Request object to inspect
+   * @return {Boolean} `true` if the request is valid, else `false`
+   * @public
+   */
+  shouldHandle(req) {
+    if (this.options.path) {
+      const index = req.url.indexOf('?');
+      const pathname = index !== -1 ? req.url.slice(0, index) : req.url;
+
+      if (pathname !== this.options.path) return false;
+    }
+
+    return true;
+  }
+
+  /**
+   * Handle a HTTP Upgrade request.
+   *
+   * @param {http.IncomingMessage} req The request object
+   * @param {net.Socket} socket The network socket between the server and client
+   * @param {Buffer} head The first packet of the upgraded stream
+   * @param {Function} cb Callback
+   * @public
+   */
+  handleUpgrade(req, socket, head, cb) {
+    socket.on('error', socketOnError);
+
+    const key =
+      req.headers['sec-websocket-key'] !== undefined
+        ? req.headers['sec-websocket-key'].trim()
+        : false;
+    const version = +req.headers['sec-websocket-version'];
+    const extensions = {};
+
+    if (
+      req.method !== 'GET' ||
+      req.headers.upgrade.toLowerCase() !== 'websocket' ||
+      !key ||
+      !keyRegex.test(key) ||
+      (version !== 8 && version !== 13) ||
+      !this.shouldHandle(req)
+    ) {
+      return abortHandshake(socket, 400);
+    }
+
+    if (this.options.perMessageDeflate) {
+      const perMessageDeflate = new PerMessageDeflate(
+        this.options.perMessageDeflate,
+        true,
+        this.options.maxPayload
+      );
+
+      try {
+        const offers = parse(req.headers['sec-websocket-extensions']);
+
+        if (offers[PerMessageDeflate.extensionName]) {
+          perMessageDeflate.accept(offers[PerMessageDeflate.extensionName]);
+          extensions[PerMessageDeflate.extensionName] = perMessageDeflate;
+        }
+      } catch (err) {
+        return abortHandshake(socket, 400);
+      }
+    }
+
+    //
+    // Optionally call external client verification handler.
+    //
+    if (this.options.verifyClient) {
+      const info = {
+        origin:
+          req.headers[`${version === 8 ? 'sec-websocket-origin' : 'origin'}`],
+        secure: !!(req.connection.authorized || req.connection.encrypted),
+        req
+      };
+
+      if (this.options.verifyClient.length === 2) {
+        this.options.verifyClient(info, (verified, code, message, headers) => {
+          if (!verified) {
+            return abortHandshake(socket, code || 401, message, headers);
+          }
+
+          this.completeUpgrade(key, extensions, req, socket, head, cb);
+        });
+        return;
+      }
+
+      if (!this.options.verifyClient(info)) return abortHandshake(socket, 401);
+    }
+
+    this.completeUpgrade(key, extensions, req, socket, head, cb);
+  }
+
+  /**
+   * Upgrade the connection to WebSocket.
+   *
+   * @param {String} key The value of the `Sec-WebSocket-Key` header
+   * @param {Object} extensions The accepted extensions
+   * @param {http.IncomingMessage} req The request object
+   * @param {net.Socket} socket The network socket between the server and client
+   * @param {Buffer} head The first packet of the upgraded stream
+   * @param {Function} cb Callback
+   * @throws {Error} If called more than once with the same socket
+   * @private
+   */
+  completeUpgrade(key, extensions, req, socket, head, cb) {
+    //
+    // Destroy the socket if the client has already sent a FIN packet.
+    //
+    if (!socket.readable || !socket.writable) return socket.destroy();
+
+    if (socket[kWebSocket]) {
+      throw new Error(
+        'server.handleUpgrade() was called more than once with the same ' +
+          'socket, possibly due to a misconfiguration'
+      );
+    }
+
+    const digest = createHash('sha1')
+      .update(key + GUID)
+      .digest('base64');
+
+    const headers = [
+      'HTTP/1.1 101 Switching Protocols',
+      'Upgrade: websocket',
+      'Connection: Upgrade',
+      `Sec-WebSocket-Accept: ${digest}`
+    ];
+
+    const ws = new WebSocket(null);
+    let protocol = req.headers['sec-websocket-protocol'];
+
+    if (protocol) {
+      protocol = protocol.trim().split(/ *, */);
+
+      //
+      // Optionally call external protocol selection handler.
+      //
+      if (this.options.handleProtocols) {
+        protocol = this.options.handleProtocols(protocol, req);
+      } else {
+        protocol = protocol[0];
+      }
+
+      if (protocol) {
+        headers.push(`Sec-WebSocket-Protocol: ${protocol}`);
+        ws._protocol = protocol;
+      }
+    }
+
+    if (extensions[PerMessageDeflate.extensionName]) {
+      const params = extensions[PerMessageDeflate.extensionName].params;
+      const value = format({
+        [PerMessageDeflate.extensionName]: [params]
+      });
+      headers.push(`Sec-WebSocket-Extensions: ${value}`);
+      ws._extensions = extensions;
+    }
+
+    //
+    // Allow external modification/inspection of handshake headers.
+    //
+    this.emit('headers', headers, req);
+
+    socket.write(headers.concat('\r\n').join('\r\n'));
+    socket.removeListener('error', socketOnError);
+
+    ws.setSocket(socket, head, this.options.maxPayload);
+
+    if (this.clients) {
+      this.clients.add(ws);
+      ws.on('close', () => this.clients.delete(ws));
+    }
+
+    cb(ws, req);
+  }
+}
+
+module.exports = WebSocketServer;
+
+/**
+ * Add event listeners on an `EventEmitter` using a map of <event, listener>
+ * pairs.
+ *
+ * @param {EventEmitter} server The event emitter
+ * @param {Object.<String, Function>} map The listeners to add
+ * @return {Function} A function that will remove the added listeners when
+ *     called
+ * @private
+ */
+function addListeners(server, map) {
+  for (const event of Object.keys(map)) server.on(event, map[event]);
+
+  return function removeListeners() {
+    for (const event of Object.keys(map)) {
+      server.removeListener(event, map[event]);
+    }
+  };
+}
+
+/**
+ * Emit a `'close'` event on an `EventEmitter`.
+ *
+ * @param {EventEmitter} server The event emitter
+ * @private
+ */
+function emitClose(server) {
+  server.emit('close');
+}
+
+/**
+ * Handle premature socket errors.
+ *
+ * @private
+ */
+function socketOnError() {
+  this.destroy();
+}
+
+/**
+ * Close the connection when preconditions are not fulfilled.
+ *
+ * @param {net.Socket} socket The socket of the upgrade request
+ * @param {Number} code The HTTP response status code
+ * @param {String} [message] The HTTP response body
+ * @param {Object} [headers] Additional HTTP response headers
+ * @private
+ */
+function abortHandshake(socket, code, message, headers) {
+  if (socket.writable) {
+    message = message || STATUS_CODES[code];
+    headers = {
+      Connection: 'close',
+      'Content-Type': 'text/html',
+      'Content-Length': Buffer.byteLength(message),
+      ...headers
+    };
+
+    socket.write(
+      `HTTP/1.1 ${code} ${STATUS_CODES[code]}\r\n` +
+        Object.keys(headers)
+          .map((h) => `${h}: ${headers[h]}`)
+          .join('\r\n') +
+        '\r\n\r\n' +
+        message
+    );
+  }
+
+  socket.removeListener('error', socketOnError);
+  socket.destroy();
+}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/websocket.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/websocket.js
new file mode 100644
index 00000000000..5386c8ec999
--- /dev/null
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/lib/websocket.js
@@ -0,0 +1,933 @@
+'use strict';
+
+const EventEmitter = require('events');
+const https = require('https');
+const http = require('http');
+const net = require('net');
+const tls = require('tls');
+const { randomBytes, createHash } = require('crypto');
+const { URL } = require('url');
+
+const PerMessageDeflate = require('./permessage-deflate');
+const Receiver = require('./receiver');
+const Sender = require('./sender');
+const {
+  BINARY_TYPES,
+  EMPTY_BUFFER,
+  GUID,
+  kStatusCode,
+  kWebSocket,
+  NOOP
+} = require('./constants');
+const { addEventListener, removeEventListener } = require('./event-target');
+const { format, parse } = require('./extension');
+const { toBuffer } = require('./buffer-util');
+
+const readyStates = ['CONNECTING', 'OPEN', 'CLOSING', 'CLOSED'];
+const protocolVersions = [8, 13];
+const closeTimeout = 30 * 1000;
+
+/**
+ * Class representing a WebSocket.
+ *
+ * @extends EventEmitter
+ */
+class WebSocket extends EventEmitter {
+  /**
+   * Create a new `WebSocket`.
+   *
+   * @param {(String|url.URL)} address The URL to which to connect
+   * @param {(String|String[])} [protocols] The subprotocols
+   * @param {Object} [options] Connection options
+   */
+  constructor(address, protocols, options) {
+    super();
+
+    this._binaryType = BINARY_TYPES[0];
+    this._closeCode = 1006;
+    this._closeFrameReceived = false;
+    this._closeFrameSent = false;
+    this._closeMessage = '';
+    this._closeTimer = null;
+    this._extensions = {};
+    this._protocol = '';
+    this._readyState = WebSocket.CONNECTING;
+    this._receiver = null;
+    this._sender = null;
+    this._socket = null;
+
+    if (address !== null) {
+      this._bufferedAmount = 0;
+      this._isServer = false;
+      this._redirects = 0;
+
+      if (Array.isArray(protocols)) {
+        protocols = protocols.join(', ');
+      } else if (typeof protocols === 'object' && protocols !== null) {
+        options = protocols;
+        protocols = undefined;
+      }
+
+      initAsClient(this, address, protocols, options);
+    } else {
+      this._isServer = true;
+    }
+  }
+
+  /**
+   * This deviates from the WHATWG interface since ws doesn't support the
+   * required default "blob" type (instead we define a custom "nodebuffer"
+   * type).
+   *
+   * @type {String}
+   */
+  get binaryType() {
+    return this._binaryType;
+  }
+
+  set binaryType(type) {
+    if (!BINARY_TYPES.includes(type)) return;
+
+    this._binaryType = type;
+
+    //
+    // Allow to change `binaryType` on the fly.
+    //
+    if (this._receiver) this._receiver._binaryType = type;
+  }
+
+  /**
+   * @type {Number}
+   */
+  get bufferedAmount() {
+    if (!this._socket) return this._bufferedAmount;
+
+    return this._socket._writableState.length + this._sender._bufferedBytes;
+  }
+
+  /**
+   * @type {String}
+   */
+  get extensions() {
+    return Object.keys(this._extensions).join();
+  }
+
+  /**
+   * @type {String}
+   */
+  get protocol() {
+    return this._protocol;
+  }
+
+  /**
+   * @type {Number}
+   */
+  get readyState() {
+    return this._readyState;
+  }
+
+  /**
+   * @type {String}
+   */
+  get url() {
+    return this._url;
+  }
+
+  /**
+   * Set up the socket and the internal resources.
+   *
+   * @param {net.Socket} socket The network socket between the server and client
+   * @param {Buffer} head The first packet of the upgraded stream
+   * @param {Number} [maxPayload=0] The maximum allowed message size
+   * @private
+   */
+  setSocket(socket, head, maxPayload) {
+    const receiver = new Receiver(
+      this.binaryType,
+      this._extensions,
+      this._isServer,
+      maxPayload
+    );
+
+    this._sender = new Sender(socket, this._extensions);
+    this._receiver = receiver;
+    this._socket = socket;
+
+    receiver[kWebSocket] = this;
+    socket[kWebSocket] = this;
+
+    receiver.on('conclude', receiverOnConclude);
+    receiver.on('drain', receiverOnDrain);
+    receiver.on('error', receiverOnError);
+    receiver.on('message', receiverOnMessage);
+    receiver.on('ping', receiverOnPing);
+    receiver.on('pong', receiverOnPong);
+
+    socket.setTimeout(0);
+    socket.setNoDelay();
+
+    if (head.length > 0) socket.unshift(head);
+
+    socket.on('close', socketOnClose);
+    socket.on('data', socketOnData);
+    socket.on('end', socketOnEnd);
+    socket.on('error', socketOnError);
+
+    this._readyState = WebSocket.OPEN;
+    this.emit('open');
+  }
+
+  /**
+   * Emit the `'close'` event.
+   *
+   * @private
+   */
+  emitClose() {
+    if (!this._socket) {
+      this._readyState = WebSocket.CLOSED;
+      this.emit('close', this._closeCode, this._closeMessage);
+      return;
+    }
+
+    if (this._extensions[PerMessageDeflate.extensionName]) {
+      this._extensions[PerMessageDeflate.extensionName].cleanup();
+    }
+
+    this._receiver.removeAllListeners();
+    this._readyState = WebSocket.CLOSED;
+    this.emit('close', this._closeCode, this._closeMessage);
+  }
+
+  /**
+   * Start a closing handshake.
+   *
+   *          +----------+   +-----------+   +----------+
+   *     - - -|ws.close()|-->|close frame|-->|ws.close()|- - -
+   *    |     +----------+   +-----------+   +----------+     |
+   *          +----------+   +-----------+         |
+   * CLOSING  |ws.close()|<--|close frame|<--+-----+       CLOSING
+   *          +----------+   +-----------+   |
+   *    |           |                        |   +---+        |
+   *                +------------------------+-->|fin| - - - -
+   *    |         +---+                      |   +---+
+   *     - - - - -|fin|<---------------------+
+   *              +---+
+   *
+   * @param {Number} [code] Status code explaining why the connection is closing
+   * @param {String} [data] A string explaining why the connection is closing
+   * @public
+   */
+  close(code, data) {
+    if (this.readyState === WebSocket.CLOSED) return;
+    if (this.readyState === WebSocket.CONNECTING) {
+      const msg = 'WebSocket was closed before the connection was established';
+      return abortHandshake(this, this._req, msg);
+    }
+
+    if (this.readyState === WebSocket.CLOSING) {
+      if (this._closeFrameSent && this._closeFrameReceived) this._socket.end();
+      return;
+    }
+
+    this._readyState = WebSocket.CLOSING;
+    this._sender.close(code, data, !this._isServer, (err) => {
+      //
+      // This error is handled by the `'error'` listener on the socket. We only
+      // want to know if the close frame has been sent here.
+      //
+      if (err) return;
+
+      this._closeFrameSent = true;
+      if (this._closeFrameReceived) this._socket.end();
+    });
+
+    //
+    // Specify a timeout for the closing handshake to complete.
+    //
+    this._closeTimer = setTimeout(
+      this._socket.destroy.bind(this._socket),
+      closeTimeout
+    );
+  }
+
+  /**
+   * Send a ping.
+   *
+   * @param {*} [data] The data to send
+   * @param {Boolean} [mask] Indicates whether or not to mask `data`
+   * @param {Function} [cb] Callback which is executed when the ping is sent
+   * @public
+   */
+  ping(data, mask, cb) {
+    if (this.readyState === WebSocket.CONNECTING) {
+      throw new Error('WebSocket is not open: readyState 0 (CONNECTING)');
+    }
+
+    if (typeof data === 'function') {
+      cb = data;
+      data = mask = undefined;
+    } else if (typeof mask === 'function') {
+      cb = mask;
+      mask = undefined;
+    }
+
+    if (typeof data === 'number') data = data.toString();
+
+    if (this.readyState !== WebSocket.OPEN) {
+      sendAfterClose(this, data, cb);
+      return;
+    }
+
+    if (mask === undefined) mask = !this._isServer;
+    this._sender.ping(data || EMPTY_BUFFER, mask, cb);
+  }
+
+  /**
+   * Send a pong.
+   *
+   * @param {*} [data] The data to send
+   * @param {Boolean} [mask] Indicates whether or not to mask `data`
+   * @param {Function} [cb] Callback which is executed when the pong is sent
+   * @public
+   */
+  pong(data, mask, cb) {
+    if (this.readyState === WebSocket.CONNECTING) {
+      throw new Error('WebSocket is not open: readyState 0 (CONNECTING)');
+    }
+
+    if (typeof data === 'function') {
+      cb = data;
+      data = mask = undefined;
+    } else if (typeof mask === 'function') {
+      cb = mask;
+      mask = undefined;
+    }
+
+    if (typeof data === 'number') data = data.toString();
+
+    if (this.readyState !== WebSocket.OPEN) {
+      sendAfterClose(this, data, cb);
+      return;
+    }
+
+    if (mask === undefined) mask = !this._isServer;
+    this._sender.pong(data || EMPTY_BUFFER, mask, cb);
+  }
+
+  /**
+   * Send a data message.
+   *
+   * @param {*} data The message to send
+   * @param {Object} [options] Options object
+   * @param {Boolean} [options.compress] Specifies whether or not to compress
+   *     `data`
+   * @param {Boolean} [options.binary] Specifies whether `data` is binary or
+   *     text
+   * @param {Boolean} [options.fin=true] Specifies whether the fragment is the
+   *     last one
+   * @param {Boolean} [options.mask] Specifies whether or not to mask `data`
+   * @param {Function} [cb] Callback which is executed when data is written out
+   * @public
+   */
+  send(data, options, cb) {
+    if (this.readyState === WebSocket.CONNECTING) {
+      throw new Error('WebSocket is not open: readyState 0 (CONNECTING)');
+    }
+
+    if (typeof options === 'function') {
+      cb = options;
+      options = {};
+    }
+
+    if (typeof data === 'number') data = data.toString();
+
+    if (this.readyState !== WebSocket.OPEN) {
+      sendAfterClose(this, data, cb);
+      return;
+    }
+
+    const opts = {
+      binary: typeof data !== 'string',
+      mask: !this._isServer,
+      compress: true,
+      fin: true,
+      ...options
+    };
+
+    if (!this._extensions[PerMessageDeflate.extensionName]) {
+      opts.compress = false;
+    }
+
+    this._sender.send(data || EMPTY_BUFFER, opts, cb);
+  }
+
+  /**
+   * Forcibly close the connection.
+   *
+   * @public
+   */
+  terminate() {
+    if (this.readyState === WebSocket.CLOSED) return;
+    if (this.readyState === WebSocket.CONNECTING) {
+      const msg = 'WebSocket was closed before the connection was established';
+      return abortHandshake(this, this._req, msg);
+    }
+
+    if (this._socket) {
+      this._readyState = WebSocket.CLOSING;
+      this._socket.destroy();
+    }
+  }
+}
+
+readyStates.forEach((readyState, i) => {
+  const descriptor = { enumerable: true, value: i };
+
+  Object.defineProperty(WebSocket.prototype, readyState, descriptor);
+  Object.defineProperty(WebSocket, readyState, descriptor);
+});
+
+[
+  'binaryType',
+  'bufferedAmount',
+  'extensions',
+  'protocol',
+  'readyState',
+  'url'
+].forEach((property) => {
+  Object.defineProperty(WebSocket.prototype, property, { enumerable: true });
+});
+
+//
+// Add the `onopen`, `onerror`, `onclose`, and `onmessage` attributes.
+// See https://html.spec.whatwg.org/multipage/comms.html#the-websocket-interface
+//
+['open', 'error', 'close', 'message'].forEach((method) => {
+  Object.defineProperty(WebSocket.prototype, `on${method}`, {
+    configurable: true,
+    enumerable: true,
+    /**
+     * Return the listener of the event.
+     *
+     * @return {(Function|undefined)} The event listener or `undefined`
+     * @public
+     */
+    get() {
+      const listeners = this.listeners(method);
+      for (let i = 0; i < listeners.length; i++) {
+        if (listeners[i]._listener) return listeners[i]._listener;
+      }
+
+      return undefined;
+    },
+    /**
+     * Add a listener for the event.
+     *
+     * @param {Function} listener The listener to add
+     * @public
+     */
+    set(listener) {
+      const listeners = this.listeners(method);
+      for (let i = 0; i < listeners.length; i++) {
+        //
+        // Remove only the listeners added via `addEventListener`.
+        //
+        if (listeners[i]._listener) this.removeListener(method, listeners[i]);
+      }
+      this.addEventListener(method, listener);
+    }
+  });
+});
+
+WebSocket.prototype.addEventListener = addEventListener;
+WebSocket.prototype.removeEventListener = removeEventListener;
+
+module.exports = WebSocket;
+
+/**
+ * Initialize a WebSocket client.
+ *
+ * @param {WebSocket} websocket The client to initialize
+ * @param {(String|url.URL)} address The URL to which to connect
+ * @param {String} [protocols] The subprotocols
+ * @param {Object} [options] Connection options
+ * @param {(Boolean|Object)} [options.perMessageDeflate=true] Enable/disable
+ *     permessage-deflate
+ * @param {Number} [options.handshakeTimeout] Timeout in milliseconds for the
+ *     handshake request
+ * @param {Number} [options.protocolVersion=13] Value of the
+ *     `Sec-WebSocket-Version` header
+ * @param {String} [options.origin] Value of the `Origin` or
+ *     `Sec-WebSocket-Origin` header
+ * @param {Number} [options.maxPayload=104857600] The maximum allowed message
+ *     size
+ * @param {Boolean} [options.followRedirects=false] Whether or not to follow
+ *     redirects
+ * @param {Number} [options.maxRedirects=10] The maximum number of redirects
+ *     allowed
+ * @private
+ */
+function initAsClient(websocket, address, protocols, options) {
+  const opts = {
+    protocolVersion: protocolVersions[1],
+    maxPayload: 100 * 1024 * 1024,
+    perMessageDeflate: true,
+    followRedirects: false,
+    maxRedirects: 10,
+    ...options,
+    createConnection: undefined,
+    socketPath: undefined,
+    hostname: undefined,
+    protocol: undefined,
+    timeout: undefined,
+    method: undefined,
+    host: undefined,
+    path: undefined,
+    port: undefined
+  };
+
+  if (!protocolVersions.includes(opts.protocolVersion)) {
+    throw new RangeError(
+      `Unsupported protocol version: ${opts.protocolVersion} ` +
+        `(supported versions: ${protocolVersions.join(', ')})`
+    );
+  }
+
+  let parsedUrl;
+
+  if (address instanceof URL) {
+    parsedUrl = address;
+    websocket._url = address.href;
+  } else {
+    parsedUrl = new URL(address);
+    websocket._url = address;
+  }
+
+  const isUnixSocket = parsedUrl.protocol === 'ws+unix:';
+
+  if (!parsedUrl.host && (!isUnixSocket || !parsedUrl.pathname)) {
+    throw new Error(`Invalid URL: ${websocket.url}`);
+  }
+
+  const isSecure =
+    parsedUrl.protocol === 'wss:' || parsedUrl.protocol === 'https:';
+  const defaultPort = isSecure ? 443 : 80;
+  const key = randomBytes(16).toString('base64');
+  const get = isSecure ? https.get : http.get;
+  let perMessageDeflate;
+
+  opts.createConnection = isSecure ? tlsConnect : netConnect;
+  opts.defaultPort = opts.defaultPort || defaultPort;
+  opts.port = parsedUrl.port || defaultPort;
+  opts.host = parsedUrl.hostname.startsWith('[')
+    ? parsedUrl.hostname.slice(1, -1)
+    : parsedUrl.hostname;
+  opts.headers = {
+    'Sec-WebSocket-Version': opts.protocolVersion,
+    'Sec-WebSocket-Key': key,
+    Connection: 'Upgrade',
+    Upgrade: 'websocket',
+    ...opts.headers
+  };
+  opts.path = parsedUrl.pathname + parsedUrl.search;
+  opts.timeout = opts.handshakeTimeout;
+
+  if (opts.perMessageDeflate) {
+    perMessageDeflate = new PerMessageDeflate(
+      opts.perMessageDeflate !== true ? opts.perMessageDeflate : {},
+      false,
+      opts.maxPayload
+    );
+    opts.headers['Sec-WebSocket-Extensions'] = format({
+      [PerMessageDeflate.extensionName]: perMessageDeflate.offer()
+    });
+  }
+  if (protocols) {
+    opts.headers['Sec-WebSocket-Protocol'] = protocols;
+  }
+  if (opts.origin) {
+    if (opts.protocolVersion < 13) {
+      opts.headers['Sec-WebSocket-Origin'] = opts.origin;
+    } else {
+      opts.headers.Origin = opts.origin;
+    }
+  }
+  if (parsedUrl.username || parsedUrl.password) {
+    opts.auth = `${parsedUrl.username}:${parsedUrl.password}`;
+  }
+
+  if (isUnixSocket) {
+    const parts = opts.path.split(':');
+
+    opts.socketPath = parts[0];
+    opts.path = parts[1];
+  }
+
+  let req = (websocket._req = get(opts));
+
+  if (opts.timeout) {
+    req.on('timeout', () => {
+      abortHandshake(websocket, req, 'Opening handshake has timed out');
+    });
+  }
+
+  req.on('error', (err) => {
+    if (websocket._req.aborted) return;
+
+    req = websocket._req = null;
+    websocket._readyState = WebSocket.CLOSING;
+    websocket.emit('error', err);
+    websocket.emitClose();
+  });
+
+  req.on('response', (res) => {
+    const location = res.headers.location;
+    const statusCode = res.statusCode;
+
+    if (
+      location &&
+      opts.followRedirects &&
+      statusCode >= 300 &&
+      statusCode < 400
+    ) {
+      if (++websocket._redirects > opts.maxRedirects) {
+        abortHandshake(websocket, req, 'Maximum redirects exceeded');
+        return;
+      }
+
+      req.abort();
+
+      const addr = new URL(location, address);
+
+      initAsClient(websocket, addr, protocols, options);
+    } else if (!websocket.emit('unexpected-response', req, res)) {
+      abortHandshake(
+        websocket,
+        req,
+        `Unexpected server response: ${res.statusCode}`
+      );
+    }
+  });
+
+  req.on('upgrade', (res, socket, head) => {
+    websocket.emit('upgrade', res);
+
+    //
+    // The user may have closed the connection from a listener of the `upgrade`
+    // event.
+    //
+    if (websocket.readyState !== WebSocket.CONNECTING) return;
+
+    req = websocket._req = null;
+
+    const digest = createHash('sha1')
+      .update(key + GUID)
+      .digest('base64');
+
+    if (res.headers['sec-websocket-accept'] !== digest) {
+      abortHandshake(websocket, socket, 'Invalid Sec-WebSocket-Accept header');
+      return;
+    }
+
+    const serverProt = res.headers['sec-websocket-protocol'];
+    const protList = (protocols || '').split(/, */);
+    let protError;
+
+    if (!protocols && serverProt) {
+      protError = 'Server sent a subprotocol but none was requested';
+    } else if (protocols && !serverProt) {
+      protError = 'Server sent no subprotocol';
+    } else if (serverProt && !protList.includes(serverProt)) {
+      protError = 'Server sent an invalid subprotocol';
+    }
+
+    if (protError) {
+      abortHandshake(websocket, socket, protError);
+      return;
+    }
+
+    if (serverProt) websocket._protocol = serverProt;
+
+    if (perMessageDeflate) {
+      try {
+        const extensions = parse(res.headers['sec-websocket-extensions']);
+
+        if (extensions[PerMessageDeflate.extensionName]) {
+          perMessageDeflate.accept(extensions[PerMessageDeflate.extensionName]);
+          websocket._extensions[
+            PerMessageDeflate.extensionName
+          ] = perMessageDeflate;
+        }
+      } catch (err) {
+        abortHandshake(
+          websocket,
+          socket,
+          'Invalid Sec-WebSocket-Extensions header'
+        );
+        return;
+      }
+    }
+
+    websocket.setSocket(socket, head, opts.maxPayload);
+  });
+}
+
+/**
+ * Create a `net.Socket` and initiate a connection.
+ *
+ * @param {Object} options Connection options
+ * @return {net.Socket} The newly created socket used to start the connection
+ * @private
+ */
+function netConnect(options) {
+  options.path = options.socketPath;
+  return net.connect(options);
+}
+
+/**
+ * Create a `tls.TLSSocket` and initiate a connection.
+ *
+ * @param {Object} options Connection options
+ * @return {tls.TLSSocket} The newly created socket used to start the connection
+ * @private
+ */
+function tlsConnect(options) {
+  options.path = undefined;
+
+  if (!options.servername && options.servername !== '') {
+    options.servername = options.host;
+  }
+
+  return tls.connect(options);
+}
+
+/**
+ * Abort the handshake and emit an error.
+ *
+ * @param {WebSocket} websocket The WebSocket instance
+ * @param {(http.ClientRequest|net.Socket)} stream The request to abort or the
+ *     socket to destroy
+ * @param {String} message The error message
+ * @private
+ */
+function abortHandshake(websocket, stream, message) {
+  websocket._readyState = WebSocket.CLOSING;
+
+  const err = new Error(message);
+  Error.captureStackTrace(err, abortHandshake);
+
+  if (stream.setHeader) {
+    stream.abort();
+    stream.once('abort', websocket.emitClose.bind(websocket));
+    websocket.emit('error', err);
+  } else {
+    stream.destroy(err);
+    stream.once('error', websocket.emit.bind(websocket, 'error'));
+    stream.once('close', websocket.emitClose.bind(websocket));
+  }
+}
+
+/**
+ * Handle cases where the `ping()`, `pong()`, or `send()` methods are called
+ * when the `readyState` attribute is `CLOSING` or `CLOSED`.
+ *
+ * @param {WebSocket} websocket The WebSocket instance
+ * @param {*} [data] The data to send
+ * @param {Function} [cb] Callback
+ * @private
+ */
+function sendAfterClose(websocket, data, cb) {
+  if (data) {
+    const length = toBuffer(data).length;
+
+    //
+    // The `_bufferedAmount` property is used only when the peer is a client and
+    // the opening handshake fails. Under these circumstances, in fact, the
+    // `setSocket()` method is not called, so the `_socket` and `_sender`
+    // properties are set to `null`.
+    //
+    if (websocket._socket) websocket._sender._bufferedBytes += length;
+    else websocket._bufferedAmount += length;
+  }
+
+  if (cb) {
+    const err = new Error(
+      `WebSocket is not open: readyState ${websocket.readyState} ` +
+        `(${readyStates[websocket.readyState]})`
+    );
+    cb(err);
+  }
+}
+
+/**
+ * The listener of the `Receiver` `'conclude'` event.
+ *
+ * @param {Number} code The status code
+ * @param {String} reason The reason for closing
+ * @private
+ */
+function receiverOnConclude(code, reason) {
+  const websocket = this[kWebSocket];
+
+  websocket._socket.removeListener('data', socketOnData);
+  websocket._socket.resume();
+
+  websocket._closeFrameReceived = true;
+  websocket._closeMessage = reason;
+  websocket._closeCode = code;
+
+  if (code === 1005) websocket.close();
+  else websocket.close(code, reason);
+}
+
+/**
+ * The listener of the `Receiver` `'drain'` event.
+ *
+ * @private
+ */
+function receiverOnDrain() {
+  this[kWebSocket]._socket.resume();
+}
+
+/**
+ * The listener of the `Receiver` `'error'` event.
+ *
+ * @param {(RangeError|Error)} err The emitted error
+ * @private
+ */
+function receiverOnError(err) {
+  const websocket = this[kWebSocket];
+
+  websocket._socket.removeListener('data', socketOnData);
+
+  websocket._readyState = WebSocket.CLOSING;
+  websocket._closeCode = err[kStatusCode];
+  websocket.emit('error', err);
+  websocket._socket.destroy();
+}
+
+/**
+ * The listener of the `Receiver` `'finish'` event.
+ *
+ * @private
+ */
+function receiverOnFinish() {
+  this[kWebSocket].emitClose();
+}
+
+/**
+ * The listener of the `Receiver` `'message'` event.
+ *
+ * @param {(String|Buffer|ArrayBuffer|Buffer[])} data The message
+ * @private
+ */
+function receiverOnMessage(data) {
+  this[kWebSocket].emit('message', data);
+}
+
+/**
+ * The listener of the `Receiver` `'ping'` event.
+ *
+ * @param {Buffer} data The data included in the ping frame
+ * @private
+ */
+function receiverOnPing(data) {
+  const websocket = this[kWebSocket];
+
+  websocket.pong(data, !websocket._isServer, NOOP);
+  websocket.emit('ping', data);
+}
+
+/**
+ * The listener of the `Receiver` `'pong'` event.
+ *
+ * @param {Buffer} data The data included in the pong frame
+ * @private
+ */
+function receiverOnPong(data) {
+  this[kWebSocket].emit('pong', data);
+}
+
+/**
+ * The listener of the `net.Socket` `'close'` event.
+ *
+ * @private
+ */
+function socketOnClose() {
+  const websocket = this[kWebSocket];
+
+  this.removeListener('close', socketOnClose);
+  this.removeListener('end', socketOnEnd);
+
+  websocket._readyState = WebSocket.CLOSING;
+
+  //
+  // The close frame might not have been received or the `'end'` event emitted,
+  // for example, if the socket was destroyed due to an error. Ensure that the
+  // `receiver` stream is closed after writing any remaining buffered data to
+  // it. If the readable side of the socket is in flowing mode then there is no
+  // buffered data as everything has been already written and `readable.read()`
+  // will return `null`. If instead, the socket is paused, any possible buffered
+  // data will be read as a single chunk and emitted synchronously in a single
+  // `'data'` event.
+  //
+  websocket._socket.read();
+  websocket._receiver.end();
+
+  this.removeListener('data', socketOnData);
+  this[kWebSocket] = undefined;
+
+  clearTimeout(websocket._closeTimer);
+
+  if (
+    websocket._receiver._writableState.finished ||
+    websocket._receiver._writableState.errorEmitted
+  ) {
+    websocket.emitClose();
+  } else {
+    websocket._receiver.on('error', receiverOnFinish);
+    websocket._receiver.on('finish', receiverOnFinish);
+  }
+}
+
+/**
+ * The listener of the `net.Socket` `'data'` event.
+ *
+ * @param {Buffer} chunk A chunk of data
+ * @private
+ */
+function socketOnData(chunk) {
+  if (!this[kWebSocket]._receiver.write(chunk)) {
+    this.pause();
+  }
+}
+
+/**
+ * The listener of the `net.Socket` `'end'` event.
+ *
+ * @private
+ */
+function socketOnEnd() {
+  const websocket = this[kWebSocket];
+
+  websocket._readyState = WebSocket.CLOSING;
+  websocket._receiver.end();
+  this.end();
+}
+
+/**
+ * The listener of the `net.Socket` `'error'` event.
+ *
+ * @private
+ */
+function socketOnError() {
+  const websocket = this[kWebSocket];
+
+  this.removeListener('error', socketOnError);
+  this.on('error', NOOP);
+
+  if (websocket) {
+    websocket._readyState = WebSocket.CLOSING;
+    this.destroy();
+  }
+}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/LICENSE b/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/LICENSE
deleted file mode 100644
index 0c068ceecbd..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/LICENSE
+++ /dev/null
@@ -1,21 +0,0 @@
-The MIT License (MIT)
-
-Copyright (c) Feross Aboukhadijeh
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/README.md b/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/README.md
deleted file mode 100644
index e9a81afd040..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/README.md
+++ /dev/null
@@ -1,584 +0,0 @@
-# safe-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url]
-
-[travis-image]: https://img.shields.io/travis/feross/safe-buffer/master.svg
-[travis-url]: https://travis-ci.org/feross/safe-buffer
-[npm-image]: https://img.shields.io/npm/v/safe-buffer.svg
-[npm-url]: https://npmjs.org/package/safe-buffer
-[downloads-image]: https://img.shields.io/npm/dm/safe-buffer.svg
-[downloads-url]: https://npmjs.org/package/safe-buffer
-[standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg
-[standard-url]: https://standardjs.com
-
-#### Safer Node.js Buffer API
-
-**Use the new Node.js Buffer APIs (`Buffer.from`, `Buffer.alloc`,
-`Buffer.allocUnsafe`, `Buffer.allocUnsafeSlow`) in all versions of Node.js.**
-
-**Uses the built-in implementation when available.**
-
-## install
-
-```
-npm install safe-buffer
-```
-
-## usage
-
-The goal of this package is to provide a safe replacement for the node.js `Buffer`.
-
-It's a drop-in replacement for `Buffer`. You can use it by adding one `require` line to
-the top of your node.js modules:
-
-```js
-var Buffer = require('safe-buffer').Buffer
-
-// Existing buffer code will continue to work without issues:
-
-new Buffer('hey', 'utf8')
-new Buffer([1, 2, 3], 'utf8')
-new Buffer(obj)
-new Buffer(16) // create an uninitialized buffer (potentially unsafe)
-
-// But you can use these new explicit APIs to make clear what you want:
-
-Buffer.from('hey', 'utf8') // convert from many types to a Buffer
-Buffer.alloc(16) // create a zero-filled buffer (safe)
-Buffer.allocUnsafe(16) // create an uninitialized buffer (potentially unsafe)
-```
-
-## api
-
-### Class Method: Buffer.from(array)
-<!-- YAML
-added: v3.0.0
--->
-
-* `array` {Array}
-
-Allocates a new `Buffer` using an `array` of octets.
-
-```js
-const buf = Buffer.from([0x62,0x75,0x66,0x66,0x65,0x72]);
-  // creates a new Buffer containing ASCII bytes
-  // ['b','u','f','f','e','r']
-```
-
-A `TypeError` will be thrown if `array` is not an `Array`.
-
-### Class Method: Buffer.from(arrayBuffer[, byteOffset[, length]])
-<!-- YAML
-added: v5.10.0
--->
-
-* `arrayBuffer` {ArrayBuffer} The `.buffer` property of a `TypedArray` or
-  a `new ArrayBuffer()`
-* `byteOffset` {Number} Default: `0`
-* `length` {Number} Default: `arrayBuffer.length - byteOffset`
-
-When passed a reference to the `.buffer` property of a `TypedArray` instance,
-the newly created `Buffer` will share the same allocated memory as the
-TypedArray.
-
-```js
-const arr = new Uint16Array(2);
-arr[0] = 5000;
-arr[1] = 4000;
-
-const buf = Buffer.from(arr.buffer); // shares the memory with arr;
-
-console.log(buf);
-  // Prints: <Buffer 88 13 a0 0f>
-
-// changing the TypedArray changes the Buffer also
-arr[1] = 6000;
-
-console.log(buf);
-  // Prints: <Buffer 88 13 70 17>
-```
-
-The optional `byteOffset` and `length` arguments specify a memory range within
-the `arrayBuffer` that will be shared by the `Buffer`.
-
-```js
-const ab = new ArrayBuffer(10);
-const buf = Buffer.from(ab, 0, 2);
-console.log(buf.length);
-  // Prints: 2
-```
-
-A `TypeError` will be thrown if `arrayBuffer` is not an `ArrayBuffer`.
-
-### Class Method: Buffer.from(buffer)
-<!-- YAML
-added: v3.0.0
--->
-
-* `buffer` {Buffer}
-
-Copies the passed `buffer` data onto a new `Buffer` instance.
-
-```js
-const buf1 = Buffer.from('buffer');
-const buf2 = Buffer.from(buf1);
-
-buf1[0] = 0x61;
-console.log(buf1.toString());
-  // 'auffer'
-console.log(buf2.toString());
-  // 'buffer' (copy is not changed)
-```
-
-A `TypeError` will be thrown if `buffer` is not a `Buffer`.
-
-### Class Method: Buffer.from(str[, encoding])
-<!-- YAML
-added: v5.10.0
--->
-
-* `str` {String} String to encode.
-* `encoding` {String} Encoding to use, Default: `'utf8'`
-
-Creates a new `Buffer` containing the given JavaScript string `str`. If
-provided, the `encoding` parameter identifies the character encoding.
-If not provided, `encoding` defaults to `'utf8'`.
-
-```js
-const buf1 = Buffer.from('this is a tést');
-console.log(buf1.toString());
-  // prints: this is a tést
-console.log(buf1.toString('ascii'));
-  // prints: this is a tC)st
-
-const buf2 = Buffer.from('7468697320697320612074c3a97374', 'hex');
-console.log(buf2.toString());
-  // prints: this is a tést
-```
-
-A `TypeError` will be thrown if `str` is not a string.
-
-### Class Method: Buffer.alloc(size[, fill[, encoding]])
-<!-- YAML
-added: v5.10.0
--->
-
-* `size` {Number}
-* `fill` {Value} Default: `undefined`
-* `encoding` {String} Default: `utf8`
-
-Allocates a new `Buffer` of `size` bytes. If `fill` is `undefined`, the
-`Buffer` will be *zero-filled*.
-
-```js
-const buf = Buffer.alloc(5);
-console.log(buf);
-  // <Buffer 00 00 00 00 00>
-```
-
-The `size` must be less than or equal to the value of
-`require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is
-`(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will
-be created if a `size` less than or equal to 0 is specified.
-
-If `fill` is specified, the allocated `Buffer` will be initialized by calling
-`buf.fill(fill)`. See [`buf.fill()`][] for more information.
-
-```js
-const buf = Buffer.alloc(5, 'a');
-console.log(buf);
-  // <Buffer 61 61 61 61 61>
-```
-
-If both `fill` and `encoding` are specified, the allocated `Buffer` will be
-initialized by calling `buf.fill(fill, encoding)`. For example:
-
-```js
-const buf = Buffer.alloc(11, 'aGVsbG8gd29ybGQ=', 'base64');
-console.log(buf);
-  // <Buffer 68 65 6c 6c 6f 20 77 6f 72 6c 64>
-```
-
-Calling `Buffer.alloc(size)` can be significantly slower than the alternative
-`Buffer.allocUnsafe(size)` but ensures that the newly created `Buffer` instance
-contents will *never contain sensitive data*.
-
-A `TypeError` will be thrown if `size` is not a number.
-
-### Class Method: Buffer.allocUnsafe(size)
-<!-- YAML
-added: v5.10.0
--->
-
-* `size` {Number}
-
-Allocates a new *non-zero-filled* `Buffer` of `size` bytes.  The `size` must
-be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit
-architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is
-thrown. A zero-length Buffer will be created if a `size` less than or equal to
-0 is specified.
-
-The underlying memory for `Buffer` instances created in this way is *not
-initialized*. The contents of the newly created `Buffer` are unknown and
-*may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such
-`Buffer` instances to zeroes.
-
-```js
-const buf = Buffer.allocUnsafe(5);
-console.log(buf);
-  // <Buffer 78 e0 82 02 01>
-  // (octets will be different, every time)
-buf.fill(0);
-console.log(buf);
-  // <Buffer 00 00 00 00 00>
-```
-
-A `TypeError` will be thrown if `size` is not a number.
-
-Note that the `Buffer` module pre-allocates an internal `Buffer` instance of
-size `Buffer.poolSize` that is used as a pool for the fast allocation of new
-`Buffer` instances created using `Buffer.allocUnsafe(size)` (and the deprecated
-`new Buffer(size)` constructor) only when `size` is less than or equal to
-`Buffer.poolSize >> 1` (floor of `Buffer.poolSize` divided by two). The default
-value of `Buffer.poolSize` is `8192` but can be modified.
-
-Use of this pre-allocated internal memory pool is a key difference between
-calling `Buffer.alloc(size, fill)` vs. `Buffer.allocUnsafe(size).fill(fill)`.
-Specifically, `Buffer.alloc(size, fill)` will *never* use the internal Buffer
-pool, while `Buffer.allocUnsafe(size).fill(fill)` *will* use the internal
-Buffer pool if `size` is less than or equal to half `Buffer.poolSize`. The
-difference is subtle but can be important when an application requires the
-additional performance that `Buffer.allocUnsafe(size)` provides.
-
-### Class Method: Buffer.allocUnsafeSlow(size)
-<!-- YAML
-added: v5.10.0
--->
-
-* `size` {Number}
-
-Allocates a new *non-zero-filled* and non-pooled `Buffer` of `size` bytes.  The
-`size` must be less than or equal to the value of
-`require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is
-`(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will
-be created if a `size` less than or equal to 0 is specified.
-
-The underlying memory for `Buffer` instances created in this way is *not
-initialized*. The contents of the newly created `Buffer` are unknown and
-*may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such
-`Buffer` instances to zeroes.
-
-When using `Buffer.allocUnsafe()` to allocate new `Buffer` instances,
-allocations under 4KB are, by default, sliced from a single pre-allocated
-`Buffer`. This allows applications to avoid the garbage collection overhead of
-creating many individually allocated Buffers. This approach improves both
-performance and memory usage by eliminating the need to track and cleanup as
-many `Persistent` objects.
-
-However, in the case where a developer may need to retain a small chunk of
-memory from a pool for an indeterminate amount of time, it may be appropriate
-to create an un-pooled Buffer instance using `Buffer.allocUnsafeSlow()` then
-copy out the relevant bits.
-
-```js
-// need to keep around a few small chunks of memory
-const store = [];
-
-socket.on('readable', () => {
-  const data = socket.read();
-  // allocate for retained data
-  const sb = Buffer.allocUnsafeSlow(10);
-  // copy the data into the new allocation
-  data.copy(sb, 0, 0, 10);
-  store.push(sb);
-});
-```
-
-Use of `Buffer.allocUnsafeSlow()` should be used only as a last resort *after*
-a developer has observed undue memory retention in their applications.
-
-A `TypeError` will be thrown if `size` is not a number.
-
-### All the Rest
-
-The rest of the `Buffer` API is exactly the same as in node.js.
-[See the docs](https://nodejs.org/api/buffer.html).
-
-
-## Related links
-
-- [Node.js issue: Buffer(number) is unsafe](https://github.com/nodejs/node/issues/4660)
-- [Node.js Enhancement Proposal: Buffer.from/Buffer.alloc/Buffer.zalloc/Buffer() soft-deprecate](https://github.com/nodejs/node-eps/pull/4)
-
-## Why is `Buffer` unsafe?
-
-Today, the node.js `Buffer` constructor is overloaded to handle many different argument
-types like `String`, `Array`, `Object`, `TypedArrayView` (`Uint8Array`, etc.),
-`ArrayBuffer`, and also `Number`.
-
-The API is optimized for convenience: you can throw any type at it, and it will try to do
-what you want.
-
-Because the Buffer constructor is so powerful, you often see code like this:
-
-```js
-// Convert UTF-8 strings to hex
-function toHex (str) {
-  return new Buffer(str).toString('hex')
-}
-```
-
-***But what happens if `toHex` is called with a `Number` argument?***
-
-### Remote Memory Disclosure
-
-If an attacker can make your program call the `Buffer` constructor with a `Number`
-argument, then they can make it allocate uninitialized memory from the node.js process.
-This could potentially disclose TLS private keys, user data, or database passwords.
-
-When the `Buffer` constructor is passed a `Number` argument, it returns an
-**UNINITIALIZED** block of memory of the specified `size`. When you create a `Buffer` like
-this, you **MUST** overwrite the contents before returning it to the user.
-
-From the [node.js docs](https://nodejs.org/api/buffer.html#buffer_new_buffer_size):
-
-> `new Buffer(size)`
->
-> - `size` Number
->
-> The underlying memory for `Buffer` instances created in this way is not initialized.
-> **The contents of a newly created `Buffer` are unknown and could contain sensitive
-> data.** Use `buf.fill(0)` to initialize a Buffer to zeroes.
-
-(Emphasis our own.)
-
-Whenever the programmer intended to create an uninitialized `Buffer` you often see code
-like this:
-
-```js
-var buf = new Buffer(16)
-
-// Immediately overwrite the uninitialized buffer with data from another buffer
-for (var i = 0; i < buf.length; i++) {
-  buf[i] = otherBuf[i]
-}
-```
-
-
-### Would this ever be a problem in real code?
-
-Yes. It's surprisingly common to forget to check the type of your variables in a
-dynamically-typed language like JavaScript.
-
-Usually the consequences of assuming the wrong type is that your program crashes with an
-uncaught exception. But the failure mode for forgetting to check the type of arguments to
-the `Buffer` constructor is more catastrophic.
-
-Here's an example of a vulnerable service that takes a JSON payload and converts it to
-hex:
-
-```js
-// Take a JSON payload {str: "some string"} and convert it to hex
-var server = http.createServer(function (req, res) {
-  var data = ''
-  req.setEncoding('utf8')
-  req.on('data', function (chunk) {
-    data += chunk
-  })
-  req.on('end', function () {
-    var body = JSON.parse(data)
-    res.end(new Buffer(body.str).toString('hex'))
-  })
-})
-
-server.listen(8080)
-```
-
-In this example, an http client just has to send:
-
-```json
-{
-  "str": 1000
-}
-```
-
-and it will get back 1,000 bytes of uninitialized memory from the server.
-
-This is a very serious bug. It's similar in severity to the
-[the Heartbleed bug](http://heartbleed.com/) that allowed disclosure of OpenSSL process
-memory by remote attackers.
-
-
-### Which real-world packages were vulnerable?
-
-#### [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht)
-
-[Mathias Buus](https://github.com/mafintosh) and I
-([Feross Aboukhadijeh](http://feross.org/)) found this issue in one of our own packages,
-[`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht). The bug would allow
-anyone on the internet to send a series of messages to a user of `bittorrent-dht` and get
-them to reveal 20 bytes at a time of uninitialized memory from the node.js process.
-
-Here's
-[the commit](https://github.com/feross/bittorrent-dht/commit/6c7da04025d5633699800a99ec3fbadf70ad35b8)
-that fixed it. We released a new fixed version, created a
-[Node Security Project disclosure](https://nodesecurity.io/advisories/68), and deprecated all
-vulnerable versions on npm so users will get a warning to upgrade to a newer version.
-
-#### [`ws`](https://www.npmjs.com/package/ws)
-
-That got us wondering if there were other vulnerable packages. Sure enough, within a short
-period of time, we found the same issue in [`ws`](https://www.npmjs.com/package/ws), the
-most popular WebSocket implementation in node.js.
-
-If certain APIs were called with `Number` parameters instead of `String` or `Buffer` as
-expected, then uninitialized server memory would be disclosed to the remote peer.
-
-These were the vulnerable methods:
-
-```js
-socket.send(number)
-socket.ping(number)
-socket.pong(number)
-```
-
-Here's a vulnerable socket server with some echo functionality:
-
-```js
-server.on('connection', function (socket) {
-  socket.on('message', function (message) {
-    message = JSON.parse(message)
-    if (message.type === 'echo') {
-      socket.send(message.data) // send back the user's message
-    }
-  })
-})
-```
-
-`socket.send(number)` called on the server, will disclose server memory.
-
-Here's [the release](https://github.com/websockets/ws/releases/tag/1.0.1) where the issue
-was fixed, with a more detailed explanation. Props to
-[Arnout Kazemier](https://github.com/3rd-Eden) for the quick fix. Here's the
-[Node Security Project disclosure](https://nodesecurity.io/advisories/67).
-
-
-### What's the solution?
-
-It's important that node.js offers a fast way to get memory otherwise performance-critical
-applications would needlessly get a lot slower.
-
-But we need a better way to *signal our intent* as programmers. **When we want
-uninitialized memory, we should request it explicitly.**
-
-Sensitive functionality should not be packed into a developer-friendly API that loosely
-accepts many different types. This type of API encourages the lazy practice of passing
-variables in without checking the type very carefully.
-
-#### A new API: `Buffer.allocUnsafe(number)`
-
-The functionality of creating buffers with uninitialized memory should be part of another
-API. We propose `Buffer.allocUnsafe(number)`. This way, it's not part of an API that
-frequently gets user input of all sorts of different types passed into it.
-
-```js
-var buf = Buffer.allocUnsafe(16) // careful, uninitialized memory!
-
-// Immediately overwrite the uninitialized buffer with data from another buffer
-for (var i = 0; i < buf.length; i++) {
-  buf[i] = otherBuf[i]
-}
-```
-
-
-### How do we fix node.js core?
-
-We sent [a PR to node.js core](https://github.com/nodejs/node/pull/4514) (merged as
-`semver-major`) which defends against one case:
-
-```js
-var str = 16
-new Buffer(str, 'utf8')
-```
-
-In this situation, it's implied that the programmer intended the first argument to be a
-string, since they passed an encoding as a second argument. Today, node.js will allocate
-uninitialized memory in the case of `new Buffer(number, encoding)`, which is probably not
-what the programmer intended.
-
-But this is only a partial solution, since if the programmer does `new Buffer(variable)`
-(without an `encoding` parameter) there's no way to know what they intended. If `variable`
-is sometimes a number, then uninitialized memory will sometimes be returned.
-
-### What's the real long-term fix?
-
-We could deprecate and remove `new Buffer(number)` and use `Buffer.allocUnsafe(number)` when
-we need uninitialized memory. But that would break 1000s of packages.
-
-~~We believe the best solution is to:~~
-
-~~1. Change `new Buffer(number)` to return safe, zeroed-out memory~~
-
-~~2. Create a new API for creating uninitialized Buffers. We propose: `Buffer.allocUnsafe(number)`~~
-
-#### Update
-
-We now support adding three new APIs:
-
-- `Buffer.from(value)` - convert from any type to a buffer
-- `Buffer.alloc(size)` - create a zero-filled buffer
-- `Buffer.allocUnsafe(size)` - create an uninitialized buffer with given size
-
-This solves the core problem that affected `ws` and `bittorrent-dht` which is
-`Buffer(variable)` getting tricked into taking a number argument.
-
-This way, existing code continues working and the impact on the npm ecosystem will be
-minimal. Over time, npm maintainers can migrate performance-critical code to use
-`Buffer.allocUnsafe(number)` instead of `new Buffer(number)`.
-
-
-### Conclusion
-
-We think there's a serious design issue with the `Buffer` API as it exists today. It
-promotes insecure software by putting high-risk functionality into a convenient API
-with friendly "developer ergonomics".
-
-This wasn't merely a theoretical exercise because we found the issue in some of the
-most popular npm packages.
-
-Fortunately, there's an easy fix that can be applied today. Use `safe-buffer` in place of
-`buffer`.
-
-```js
-var Buffer = require('safe-buffer').Buffer
-```
-
-Eventually, we hope that node.js core can switch to this new, safer behavior. We believe
-the impact on the ecosystem would be minimal since it's not a breaking change.
-Well-maintained, popular packages would be updated to use `Buffer.alloc` quickly, while
-older, insecure packages would magically become safe from this attack vector.
-
-
-## links
-
-- [Node.js PR: buffer: throw if both length and enc are passed](https://github.com/nodejs/node/pull/4514)
-- [Node Security Project disclosure for `ws`](https://nodesecurity.io/advisories/67)
-- [Node Security Project disclosure for`bittorrent-dht`](https://nodesecurity.io/advisories/68)
-
-
-## credit
-
-The original issues in `bittorrent-dht`
-([disclosure](https://nodesecurity.io/advisories/68)) and
-`ws` ([disclosure](https://nodesecurity.io/advisories/67)) were discovered by
-[Mathias Buus](https://github.com/mafintosh) and
-[Feross Aboukhadijeh](http://feross.org/).
-
-Thanks to [Adam Baldwin](https://github.com/evilpacket) for helping disclose these issues
-and for his work running the [Node Security Project](https://nodesecurity.io/).
-
-Thanks to [John Hiesey](https://github.com/jhiesey) for proofreading this README and
-auditing the code.
-
-
-## license
-
-MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org)
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/index.d.ts b/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/index.d.ts
deleted file mode 100644
index e9fed809a5a..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/index.d.ts
+++ /dev/null
@@ -1,187 +0,0 @@
-declare module "safe-buffer" {
-  export class Buffer {
-    length: number
-    write(string: string, offset?: number, length?: number, encoding?: string): number;
-    toString(encoding?: string, start?: number, end?: number): string;
-    toJSON(): { type: 'Buffer', data: any[] };
-    equals(otherBuffer: Buffer): boolean;
-    compare(otherBuffer: Buffer, targetStart?: number, targetEnd?: number, sourceStart?: number, sourceEnd?: number): number;
-    copy(targetBuffer: Buffer, targetStart?: number, sourceStart?: number, sourceEnd?: number): number;
-    slice(start?: number, end?: number): Buffer;
-    writeUIntLE(value: number, offset: number, byteLength: number, noAssert?: boolean): number;
-    writeUIntBE(value: number, offset: number, byteLength: number, noAssert?: boolean): number;
-    writeIntLE(value: number, offset: number, byteLength: number, noAssert?: boolean): number;
-    writeIntBE(value: number, offset: number, byteLength: number, noAssert?: boolean): number;
-    readUIntLE(offset: number, byteLength: number, noAssert?: boolean): number;
-    readUIntBE(offset: number, byteLength: number, noAssert?: boolean): number;
-    readIntLE(offset: number, byteLength: number, noAssert?: boolean): number;
-    readIntBE(offset: number, byteLength: number, noAssert?: boolean): number;
-    readUInt8(offset: number, noAssert?: boolean): number;
-    readUInt16LE(offset: number, noAssert?: boolean): number;
-    readUInt16BE(offset: number, noAssert?: boolean): number;
-    readUInt32LE(offset: number, noAssert?: boolean): number;
-    readUInt32BE(offset: number, noAssert?: boolean): number;
-    readInt8(offset: number, noAssert?: boolean): number;
-    readInt16LE(offset: number, noAssert?: boolean): number;
-    readInt16BE(offset: number, noAssert?: boolean): number;
-    readInt32LE(offset: number, noAssert?: boolean): number;
-    readInt32BE(offset: number, noAssert?: boolean): number;
-    readFloatLE(offset: number, noAssert?: boolean): number;
-    readFloatBE(offset: number, noAssert?: boolean): number;
-    readDoubleLE(offset: number, noAssert?: boolean): number;
-    readDoubleBE(offset: number, noAssert?: boolean): number;
-    swap16(): Buffer;
-    swap32(): Buffer;
-    swap64(): Buffer;
-    writeUInt8(value: number, offset: number, noAssert?: boolean): number;
-    writeUInt16LE(value: number, offset: number, noAssert?: boolean): number;
-    writeUInt16BE(value: number, offset: number, noAssert?: boolean): number;
-    writeUInt32LE(value: number, offset: number, noAssert?: boolean): number;
-    writeUInt32BE(value: number, offset: number, noAssert?: boolean): number;
-    writeInt8(value: number, offset: number, noAssert?: boolean): number;
-    writeInt16LE(value: number, offset: number, noAssert?: boolean): number;
-    writeInt16BE(value: number, offset: number, noAssert?: boolean): number;
-    writeInt32LE(value: number, offset: number, noAssert?: boolean): number;
-    writeInt32BE(value: number, offset: number, noAssert?: boolean): number;
-    writeFloatLE(value: number, offset: number, noAssert?: boolean): number;
-    writeFloatBE(value: number, offset: number, noAssert?: boolean): number;
-    writeDoubleLE(value: number, offset: number, noAssert?: boolean): number;
-    writeDoubleBE(value: number, offset: number, noAssert?: boolean): number;
-    fill(value: any, offset?: number, end?: number): this;
-    indexOf(value: string | number | Buffer, byteOffset?: number, encoding?: string): number;
-    lastIndexOf(value: string | number | Buffer, byteOffset?: number, encoding?: string): number;
-    includes(value: string | number | Buffer, byteOffset?: number, encoding?: string): boolean;
-
-    /**
-     * Allocates a new buffer containing the given {str}.
-     *
-     * @param str String to store in buffer.
-     * @param encoding encoding to use, optional.  Default is 'utf8'
-     */
-     constructor (str: string, encoding?: string);
-    /**
-     * Allocates a new buffer of {size} octets.
-     *
-     * @param size count of octets to allocate.
-     */
-    constructor (size: number);
-    /**
-     * Allocates a new buffer containing the given {array} of octets.
-     *
-     * @param array The octets to store.
-     */
-    constructor (array: Uint8Array);
-    /**
-     * Produces a Buffer backed by the same allocated memory as
-     * the given {ArrayBuffer}.
-     *
-     *
-     * @param arrayBuffer The ArrayBuffer with which to share memory.
-     */
-    constructor (arrayBuffer: ArrayBuffer);
-    /**
-     * Allocates a new buffer containing the given {array} of octets.
-     *
-     * @param array The octets to store.
-     */
-    constructor (array: any[]);
-    /**
-     * Copies the passed {buffer} data onto a new {Buffer} instance.
-     *
-     * @param buffer The buffer to copy.
-     */
-    constructor (buffer: Buffer);
-    prototype: Buffer;
-    /**
-     * Allocates a new Buffer using an {array} of octets.
-     *
-     * @param array
-     */
-    static from(array: any[]): Buffer;
-    /**
-     * When passed a reference to the .buffer property of a TypedArray instance,
-     * the newly created Buffer will share the same allocated memory as the TypedArray.
-     * The optional {byteOffset} and {length} arguments specify a memory range
-     * within the {arrayBuffer} that will be shared by the Buffer.
-     *
-     * @param arrayBuffer The .buffer property of a TypedArray or a new ArrayBuffer()
-     * @param byteOffset
-     * @param length
-     */
-    static from(arrayBuffer: ArrayBuffer, byteOffset?: number, length?: number): Buffer;
-    /**
-     * Copies the passed {buffer} data onto a new Buffer instance.
-     *
-     * @param buffer
-     */
-    static from(buffer: Buffer): Buffer;
-    /**
-     * Creates a new Buffer containing the given JavaScript string {str}.
-     * If provided, the {encoding} parameter identifies the character encoding.
-     * If not provided, {encoding} defaults to 'utf8'.
-     *
-     * @param str
-     */
-    static from(str: string, encoding?: string): Buffer;
-    /**
-     * Returns true if {obj} is a Buffer
-     *
-     * @param obj object to test.
-     */
-    static isBuffer(obj: any): obj is Buffer;
-    /**
-     * Returns true if {encoding} is a valid encoding argument.
-     * Valid string encodings in Node 0.12: 'ascii'|'utf8'|'utf16le'|'ucs2'(alias of 'utf16le')|'base64'|'binary'(deprecated)|'hex'
-     *
-     * @param encoding string to test.
-     */
-    static isEncoding(encoding: string): boolean;
-    /**
-     * Gives the actual byte length of a string. encoding defaults to 'utf8'.
-     * This is not the same as String.prototype.length since that returns the number of characters in a string.
-     *
-     * @param string string to test.
-     * @param encoding encoding used to evaluate (defaults to 'utf8')
-     */
-    static byteLength(string: string, encoding?: string): number;
-    /**
-     * Returns a buffer which is the result of concatenating all the buffers in the list together.
-     *
-     * If the list has no items, or if the totalLength is 0, then it returns a zero-length buffer.
-     * If the list has exactly one item, then the first item of the list is returned.
-     * If the list has more than one item, then a new Buffer is created.
-     *
-     * @param list An array of Buffer objects to concatenate
-     * @param totalLength Total length of the buffers when concatenated.
-     *   If totalLength is not provided, it is read from the buffers in the list. However, this adds an additional loop to the function, so it is faster to provide the length explicitly.
-     */
-    static concat(list: Buffer[], totalLength?: number): Buffer;
-    /**
-     * The same as buf1.compare(buf2).
-     */
-    static compare(buf1: Buffer, buf2: Buffer): number;
-    /**
-     * Allocates a new buffer of {size} octets.
-     *
-     * @param size count of octets to allocate.
-     * @param fill if specified, buffer will be initialized by calling buf.fill(fill).
-     *    If parameter is omitted, buffer will be filled with zeros.
-     * @param encoding encoding used for call to buf.fill while initalizing
-     */
-    static alloc(size: number, fill?: string | Buffer | number, encoding?: string): Buffer;
-    /**
-     * Allocates a new buffer of {size} octets, leaving memory not initialized, so the contents
-     * of the newly created Buffer are unknown and may contain sensitive data.
-     *
-     * @param size count of octets to allocate
-     */
-    static allocUnsafe(size: number): Buffer;
-    /**
-     * Allocates a new non-pooled buffer of {size} octets, leaving memory not initialized, so the contents
-     * of the newly created Buffer are unknown and may contain sensitive data.
-     *
-     * @param size count of octets to allocate
-     */
-    static allocUnsafeSlow(size: number): Buffer;
-  }
-}
\ No newline at end of file
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/index.js b/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/index.js
deleted file mode 100644
index 22438dabbbc..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/index.js
+++ /dev/null
@@ -1,62 +0,0 @@
-/* eslint-disable node/no-deprecated-api */
-var buffer = require('buffer')
-var Buffer = buffer.Buffer
-
-// alternative to using Object.keys for old browsers
-function copyProps (src, dst) {
-  for (var key in src) {
-    dst[key] = src[key]
-  }
-}
-if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
-  module.exports = buffer
-} else {
-  // Copy properties from require('buffer')
-  copyProps(buffer, exports)
-  exports.Buffer = SafeBuffer
-}
-
-function SafeBuffer (arg, encodingOrOffset, length) {
-  return Buffer(arg, encodingOrOffset, length)
-}
-
-// Copy static methods from Buffer
-copyProps(Buffer, SafeBuffer)
-
-SafeBuffer.from = function (arg, encodingOrOffset, length) {
-  if (typeof arg === 'number') {
-    throw new TypeError('Argument must not be a number')
-  }
-  return Buffer(arg, encodingOrOffset, length)
-}
-
-SafeBuffer.alloc = function (size, fill, encoding) {
-  if (typeof size !== 'number') {
-    throw new TypeError('Argument must be a number')
-  }
-  var buf = Buffer(size)
-  if (fill !== undefined) {
-    if (typeof encoding === 'string') {
-      buf.fill(fill, encoding)
-    } else {
-      buf.fill(fill)
-    }
-  } else {
-    buf.fill(0)
-  }
-  return buf
-}
-
-SafeBuffer.allocUnsafe = function (size) {
-  if (typeof size !== 'number') {
-    throw new TypeError('Argument must be a number')
-  }
-  return Buffer(size)
-}
-
-SafeBuffer.allocUnsafeSlow = function (size) {
-  if (typeof size !== 'number') {
-    throw new TypeError('Argument must be a number')
-  }
-  return buffer.SlowBuffer(size)
-}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/package.json b/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/package.json
deleted file mode 100644
index e53c57a1a00..00000000000
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/node_modules/safe-buffer/package.json
+++ /dev/null
@@ -1,37 +0,0 @@
-{
-  "author": {
-    "email": "feross@feross.org",
-    "name": "Feross Aboukhadijeh",
-    "url": "http://feross.org"
-  },
-  "bugs": {
-    "url": "https://github.com/feross/safe-buffer/issues"
-  },
-  "description": "Safer Node.js Buffer API",
-  "devDependencies": {
-    "standard": "*",
-    "tape": "^4.0.0"
-  },
-  "homepage": "https://github.com/feross/safe-buffer",
-  "keywords": [
-    "buffer",
-    "buffer allocate",
-    "node security",
-    "safe",
-    "safe-buffer",
-    "security",
-    "uninitialized"
-  ],
-  "license": "MIT",
-  "main": "index.js",
-  "name": "safe-buffer",
-  "repository": {
-    "type": "git",
-    "url": "git://github.com/feross/safe-buffer.git"
-  },
-  "scripts": {
-    "test": "standard && tape test/*.js"
-  },
-  "types": "index.d.ts",
-  "version": "5.1.2"
-}
diff --git a/chromium/third_party/devtools-frontend/src/node_modules/ws/package.json b/chromium/third_party/devtools-frontend/src/node_modules/ws/package.json
index 559cb835cb0..baddfcbe060 100644
--- a/chromium/third_party/devtools-frontend/src/node_modules/ws/package.json
+++ b/chromium/third_party/devtools-frontend/src/node_modules/ws/package.json
@@ -1,28 +1,27 @@
 {
   "author": "Einar Otto Stangvik <einaros@gmail.com> (http://2x.io)",
+  "browser": "browser.js",
   "bugs": "https://github.com/websockets/ws/issues",
-  "dependencies": {
-    "async-limiter": "~1.0.0",
-    "safe-buffer": "~5.1.0",
-    "ultron": "~1.1.0"
-  },
   "description": "Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js",
   "devDependencies": {
-    "benchmark": "~2.1.2",
-    "bufferutil": "~3.0.0",
-    "eslint": "~4.13.0",
-    "eslint-config-standard": "~10.2.0",
-    "eslint-plugin-import": "~2.8.0",
-    "eslint-plugin-node": "~5.2.0",
-    "eslint-plugin-promise": "~3.6.0",
-    "eslint-plugin-standard": "~3.0.0",
-    "mocha": "~4.0.0",
-    "nyc": "~11.3.0",
-    "utf-8-validate": "~4.0.0"
+    "benchmark": "^2.1.4",
+    "bufferutil": "^4.0.1",
+    "coveralls": "^3.0.3",
+    "eslint": "^7.2.0",
+    "eslint-config-prettier": "^6.0.0",
+    "eslint-plugin-prettier": "^3.0.1",
+    "mocha": "^7.0.0",
+    "nyc": "^15.0.0",
+    "prettier": "^2.0.5",
+    "utf-8-validate": "^5.0.2"
+  },
+  "engines": {
+    "node": ">=8.3.0"
   },
   "files": [
+    "browser.js",
     "index.js",
-    "lib"
+    "lib/*.js"
   ],
   "homepage": "https://github.com/websockets/ws",
   "keywords": [
@@ -36,11 +35,23 @@
   "license": "MIT",
   "main": "index.js",
   "name": "ws",
+  "peerDependencies": {
+    "bufferutil": "^4.0.1",
+    "utf-8-validate": "^5.0.2"
+  },
+  "peerDependenciesMeta": {
+    "bufferutil": {
+      "optional": true
+    },
+    "utf-8-validate": {
+      "optional": true
+    }
+  },
   "repository": "websockets/ws",
   "scripts": {
-    "integration": "eslint . && mocha test/*.integration.js",
-    "lint": "eslint .",
-    "test": "eslint . && nyc --reporter=html --reporter=text mocha test/*.test.js"
+    "integration": "mocha --throw-deprecation test/*.integration.js",
+    "lint": "eslint --ignore-path .gitignore . && prettier --check --ignore-path .gitignore \"**/*.{json,md,yaml,yml}\"",
+    "test": "nyc --reporter=html --reporter=text mocha --throw-deprecation test/*.test.js"
   },
-  "version": "3.3.3"
+  "version": "7.4.0"
 }