DevTools: log worker thread ids on the main thread when Timeline recording is enabled

Source/devtools/front_end/timeline/TracingTimelineModel.js

 // 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.
 
 /**
  * @constructor
  * @param {!WebInspector.TracingModel} tracingModel
  * @param {!WebInspector.TimelineModel.Filter} recordFilter
  * @extends {WebInspector.TimelineModel}
  */
@@ skipping 213 matching lines @@
             var process = event.thread.process();
             var startTime = event.startTime;
 
             var endTime = Infinity;
             if (i + 1 < length)
                 endTime = events[i + 1].startTime;
 
             var threads = process.sortedThreads();
             for (var j = 0; j < threads.length; j++) {
                 var thread = threads[j];
-                if (thread.name() === "WebCore: Worker" && !workerMetadataEvents.some(function(e) { return e.thread === thread; }))
+                if (thread.name() === "WebCore: Worker" && !workerMetadataEvents.some(function(e) { return e.args["data"]["workerThreadId"] === thread.id(); }))
                     continue;
                 this._processThreadEvents(startTime, endTime, event.thread, thread);
             }
         }
         this._resetProcessingState();
 
         this._inspectedTargetEvents.sort(WebInspector.TracingModel.Event.compareStartTime);
 
         if (this._cpuProfile) {
             var jsSamples = WebInspector.TimelineJSProfileProcessor.generateTracingEventsFromCpuProfile(this, this._cpuProfile);
@@ skipping 798 matching lines @@
     },
 
     _didWriteNextChunk: function(stream)
     {
         if (this._recordIndex === this._payloads.length)
             stream.close();
         else
             this._writeNextChunk(stream);
     }
 }