1 files changed, 14 insertions, 2 deletions
diff --git a/chromium/third_party/blink/renderer/devtools/front_end/sdk/DebuggerModel.js b/chromium/third_party/blink/renderer/devtools/front_end/sdk/DebuggerModel.js
index ac6ec6fe0f9..d77ced84d19 100644
--- a/chromium/third_party/blink/renderer/devtools/front_end/sdk/DebuggerModel.js
+++ b/chromium/third_party/blink/renderer/devtools/front_end/sdk/DebuggerModel.js
@@ -136,6 +136,14 @@ SDK.DebuggerModel = class extends SDK.SDKModel {
       return;
     SDK.DebuggerModel._debuggerIdToModel.set(debuggerId, this);
     this._debuggerId = debuggerId;
+    this.dispatchEventToListeners(SDK.DebuggerModel.Events.DebuggerIsReadyToPause, this);
+  }
+
+  /**
+   * @return {boolean}
+   */
+  isReadyToPause() {
+    return !!this._debuggerId;
   }
 
   /**
@@ -220,6 +228,9 @@ SDK.DebuggerModel = class extends SDK.SDKModel {
   }
 
   scheduleStepIntoAsync() {
+    // Node v8.x does not support breakOnAsyncCall flag but supports old style schdeuleStepIntoAsync.
+    // End-of-life of Node 8.x is around December 2019.
+    this._agent.scheduleStepIntoAsync();
     this._agent.invoke_stepInto({breakOnAsyncCall: true});
   }
 
@@ -252,7 +263,7 @@ SDK.DebuggerModel = class extends SDK.SDKModel {
   async setBreakpointByURL(url, lineNumber, columnNumber, condition) {
     // Convert file url to node-js path.
     let urlRegex;
-    if (this.target().isNodeJS()) {
+    if (this.target().type() === SDK.Target.Type.Node) {
       const platformPath = Common.ParsedURL.urlToPlatformPath(url, Host.isWin());
       urlRegex = `${platformPath.escapeForRegExp()}|${url.escapeForRegExp()}`;
     }
@@ -929,7 +940,8 @@ SDK.DebuggerModel.Events = {
   DiscardedAnonymousScriptSource: Symbol('DiscardedAnonymousScriptSource'),
   GlobalObjectCleared: Symbol('GlobalObjectCleared'),
   CallFrameSelected: Symbol('CallFrameSelected'),
-  ConsoleCommandEvaluatedInSelectedCallFrame: Symbol('ConsoleCommandEvaluatedInSelectedCallFrame')
+  ConsoleCommandEvaluatedInSelectedCallFrame: Symbol('ConsoleCommandEvaluatedInSelectedCallFrame'),
+  DebuggerIsReadyToPause: Symbol('DebuggerIsReadyToPause'),
 };
 
 /** @enum {string} */