1 files changed, 0 insertions, 342 deletions
diff --git a/chromium/chrome/browser/resources/chromeos/chromevox/host/chrome/extension_bridge.js b/chromium/chrome/browser/resources/chromeos/chromevox/host/chrome/extension_bridge.js
deleted file mode 100644
index e2c8181a5dc..00000000000
--- a/chromium/chrome/browser/resources/chromeos/chromevox/host/chrome/extension_bridge.js
+++ /dev/null
@@ -1,342 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-/**
- * @fileoverview Bridge to aid in communication between a Chrome
- * background page and content script.
- *
- * It automatically figures out where it's being run and initializes itself
- * appropriately. Then just call send() to send a message from the background
- * to the page or vice versa, and addMessageListener() to provide a message
- * listener.  Messages can be any object that can be serialized using JSON.
- *
- */
-
-goog.provide('cvox.ExtensionBridge');
-
-goog.require('cvox.ChromeVoxJSON');
-
-/**
- * @constructor
- */
-cvox.ExtensionBridge = function() {};
-
-/**
- * Initialize the extension bridge. Dynamically figure out whether we're in
- * the background page, content script, or in a page, and call the
- * corresponding function for more specific initialization.
- */
-cvox.ExtensionBridge.init = function() {
-  var self = cvox.ExtensionBridge;
-  self.messageListeners = [];
-  self.disconnectListeners = [];
-
-  if (/^chrome-extension:\/\/.*background\.html$/.test(window.location.href)) {
-    // This depends on the fact that the background page has a specific url. We
-    // should never be loaded into another extension's background page, so this
-    // is a safe check.
-    self.context = self.BACKGROUND;
-    self.initBackground();
-    return;
-  }
-
-  if (chrome && chrome.extension) {
-    self.context = self.CONTENT_SCRIPT;
-    self.initContentScript();
-  }
-};
-
-/**
- * Constant indicating we're in a background page.
- * @type {number}
- * @const
- */
-cvox.ExtensionBridge.BACKGROUND = 0;
-
-/**
- * Constant indicating we're in a content script.
- * @type {number}
- * @const
- */
-cvox.ExtensionBridge.CONTENT_SCRIPT = 1;
-
-/**
- * The name of the port between the content script and background page.
- * @type {string}
- * @const
- */
-cvox.ExtensionBridge.PORT_NAME = 'cvox.ExtensionBridge.Port';
-
-/**
- * The name of the message between the content script and background to
- * see if they're connected.
- * @type {string}
- * @const
- */
-cvox.ExtensionBridge.PING_MSG = 'cvox.ExtensionBridge.Ping';
-
-/**
- * The name of the message between the background and content script to
- * confirm that they're connected.
- * @type {string}
- * @const
- */
-cvox.ExtensionBridge.PONG_MSG = 'cvox.ExtensionBridge.Pong';
-
-/**
- * Send a message. If the context is a page, sends a message to the
- * extension background page. If the context is a background page, sends
- * a message to the current active tab (not all tabs).
- *
- * @param {Object} message The message to be sent.
- */
-cvox.ExtensionBridge.send = function(message) {
-  var self = cvox.ExtensionBridge;
-  switch (self.context) {
-  case self.BACKGROUND:
-    self.sendBackgroundToContentScript(message);
-    break;
-  case self.CONTENT_SCRIPT:
-    self.sendContentScriptToBackground(message);
-    break;
-  }
-};
-
-/**
- * Provide a function to listen to messages. In page context, this
- * listens to messages from the background. In background context,
- * this listens to messages from all pages.
- *
- * The function gets called with two parameters: the message, and a
- * port that can be used to send replies.
- *
- * @param {function(Object, Port)} listener The message listener.
- */
-cvox.ExtensionBridge.addMessageListener = function(listener) {
-  cvox.ExtensionBridge.messageListeners.push(listener);
-};
-
-/**
- * Provide a function to be called when the connection is
- * disconnected.
- *
- * @param {function()} listener The listener.
- */
-cvox.ExtensionBridge.addDisconnectListener = function(listener) {
-  cvox.ExtensionBridge.disconnectListeners.push(listener);
-};
-
-/**
- * Removes all message listeners from the extension bridge.
- */
-cvox.ExtensionBridge.removeMessageListeners = function() {
-  cvox.ExtensionBridge.messageListeners.length = 0;
-};
-
-/**
- * Returns a unique id for this instance of the script.
- *
- * @return {number}
- */
-cvox.ExtensionBridge.uniqueId = function() {
-  return cvox.ExtensionBridge.id_;
-};
-
-/**
- * Initialize the extension bridge in a background page context by registering
- * a listener for connections from the content script.
- */
-cvox.ExtensionBridge.initBackground = function() {
-  var self = cvox.ExtensionBridge;
-
-  /** @type {!Array<Port>} @private */
-  self.portCache_ = [];
-  /** @type {number} */
-  self.nextPongId_ = 1;
-  /** @type {number} */
-  self.id_ = 0;
-
-  var onConnectHandler = function(port) {
-    if (port.name != self.PORT_NAME) {
-      return;
-    }
-
-    self.portCache_.push(port);
-
-    port.onMessage.addListener(function(message) {
-      if (message[cvox.ExtensionBridge.PING_MSG]) {
-        var pongMessage = {};
-        pongMessage[cvox.ExtensionBridge.PONG_MSG] = self.nextPongId_++;
-        port.postMessage(pongMessage);
-        return;
-      }
-
-      for (var i = 0; i < self.messageListeners.length; i++) {
-        self.messageListeners[i](message, port);
-      }
-    });
-
-    port.onDisconnect.addListener(function(message) {
-      for (var i = 0; i < self.portCache_.length; i++) {
-        if (self.portCache_[i] == port) {
-          self.portCache_.splice(i, 1);
-          break;
-        }
-      }
-    });
-  };
-
-  chrome.extension.onConnect.addListener(onConnectHandler);
-};
-
-/**
- * Initialize the extension bridge in a content script context, listening
- * for messages from the background page.
- */
-cvox.ExtensionBridge.initContentScript = function() {
-  var self = cvox.ExtensionBridge;
-  self.connected = false;
-  self.pingAttempts = 0;
-  self.queuedMessages = [];
-  /** @type {number} */
-  self.id_ = -1;
-
-  var onMessageHandler = function(request, sender, sendResponse) {
-    if (request && request['srcFile']) {
-      // TODO (clchen, deboer): Investigate this further and come up with a
-      // cleaner solution. The root issue is that this should never be run on
-      // the background page, but it is in the Chrome OS case.
-      return;
-    }
-    if (request[cvox.ExtensionBridge.PONG_MSG]) {
-      self.gotPongFromBackgroundPage(request[cvox.ExtensionBridge.PONG_MSG]);
-    } else {
-      for (var i = 0; i < self.messageListeners.length; i++) {
-        self.messageListeners[i](request, cvox.ExtensionBridge.backgroundPort);
-      }
-    }
-    sendResponse({});
-  };
-
-  // Listen to requests from the background that don't come from
-  // our connection port.
-  chrome.extension.onMessage.addListener(onMessageHandler);
-
-  self.setupBackgroundPort();
-
-  self.tryToPingBackgroundPage();
-};
-
-/**
- * Set up the connection to the background page.
- */
-cvox.ExtensionBridge.setupBackgroundPort = function() {
-  // Set up the connection to the background page.
-  var self = cvox.ExtensionBridge;
-  self.backgroundPort = chrome.extension.connect({name: self.PORT_NAME});
-  self.backgroundPort.onMessage.addListener(function(message) {
-    if (message[cvox.ExtensionBridge.PONG_MSG]) {
-      self.gotPongFromBackgroundPage(
-          message[cvox.ExtensionBridge.PONG_MSG]);
-    } else {
-      for (var i = 0; i < self.messageListeners.length; i++) {
-        self.messageListeners[i](message, self.backgroundPort);
-      }
-    }
-  });
-  self.backgroundPort.onDisconnect.addListener(function(event) {
-    // If we're not connected yet, don't give up - try again.
-    if (!self.connected) {
-      self.backgroundPort = null;
-      return;
-    }
-
-    for (var i = 0; i < self.disconnectListeners.length; i++) {
-      self.disconnectListeners[i]();
-    }
-  });
-};
-
-/**
- * Try to ping the background page.
- */
-cvox.ExtensionBridge.tryToPingBackgroundPage = function() {
-  var self = cvox.ExtensionBridge;
-
-  // If we already got a pong, great - we're done.
-  if (self.connected) {
-    return;
-  }
-
-  self.pingAttempts++;
-  if (self.pingAttempts > 5) {
-    // Could not connect after 5 ping attempts. Call the disconnect
-    // handlers, which will disable ChromeVox.
-    for (var i = 0; i < self.disconnectListeners.length; i++) {
-      self.disconnectListeners[i]();
-    }
-    return;
-  }
-
-  // Send the ping.
-  var msg = {};
-  msg[cvox.ExtensionBridge.PING_MSG] = 1;
-  if (!self.backgroundPort) {
-    self.setupBackgroundPort();
-  }
-  self.backgroundPort.postMessage(msg);
-
-  // Check again in 500 ms in case we get no response.
-  window.setTimeout(cvox.ExtensionBridge.tryToPingBackgroundPage, 500);
-};
-
-/**
- * Got pong from the background page, now we know the connection was
- * successful.
- * @param {number} pongId unique id assigned to us by the background page
- */
-cvox.ExtensionBridge.gotPongFromBackgroundPage = function(pongId) {
-  var self = cvox.ExtensionBridge;
-  self.connected = true;
-  self.id_ = pongId;
-
-  while (self.queuedMessages.length > 0) {
-    self.sendContentScriptToBackground(self.queuedMessages.shift());
-  }
-};
-
-/**
- * Send a message from the content script to the background page.
- *
- * @param {Object} message The message to send.
- */
-cvox.ExtensionBridge.sendContentScriptToBackground = function(message) {
-  var self = cvox.ExtensionBridge;
-  if (!self.connected) {
-    // We're not connected to the background page, so queue this message
-    // until we're connected.
-    self.queuedMessages.push(message);
-    return;
-  }
-
-  if (cvox.ExtensionBridge.backgroundPort) {
-    cvox.ExtensionBridge.backgroundPort.postMessage(message);
-  } else {
-    chrome.extension.sendMessage(message);
-  }
-};
-
-/**
- * Send a message from the background page to the content script of the
- * current selected tab.
- *
- * @param {Object} message The message to send.
- */
-cvox.ExtensionBridge.sendBackgroundToContentScript = function(message) {
-  cvox.ExtensionBridge.portCache_.forEach(function(port) {
-    port.postMessage(message);
-  });
-};
-
-cvox.ExtensionBridge.init();