DevTools: Send async stack trace with Network.Initiator.

Source/devtools/front_end/sdk/ConsoleModel.js

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 189 matching lines @@
     this.stackTrace = stackTrace;
     this.timestamp = timestamp || Date.now();
     this.isOutdated = isOutdated;
     this.executionContextId = executionContextId || 0;
     this.asyncStackTrace = asyncStackTrace;
 
     this.request = requestId ? target.networkLog.requestForId(requestId) : null;
 
     if (this.request) {
         this.stackTrace = this.request.initiator.stackTrace;
+        this.asyncStackTrace = this.request.initiator.asyncStackTrace;
         if (this.request.initiator && this.request.initiator.url) {
             this.url = this.request.initiator.url;
             this.line = this.request.initiator.lineNumber;
         }
-        this.asyncStackTrace = undefined;
     }
 }
 
 WebInspector.ConsoleMessage.prototype = {
     /**
      * @return {?WebInspector.Target}
      */
     target: function()
     {
         return this._target;
@@ skipping 310 matching lines @@
         this.dispatchEventToListeners(WebInspector.ConsoleModel.Events.CommandEvaluated, event.data);
     },
 
     __proto__: WebInspector.Object.prototype
 }
 
 /**
  * @type {!WebInspector.MultitargetConsoleModel}
  */
 WebInspector.multitargetConsoleModel;