Convert timestamp to milliseconds when creating TracingModel.Event

Source/devtools/front_end/timeline/TimelineFrameModel.js

 /*
  * Copyright (C) 2013 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 166 matching lines @@
             return;
         }
         if (event.phase === WebInspector.TracingModel.Phase.SnapshotObject && event.name === eventNames.LayerTreeHostImplSnapshot && parseInt(event.id, 0) === this._layerTreeId) {
             this.handleLayerTreeSnapshot(new WebInspector.DeferredTracingLayerTree(this.target(), event.args["snapshot"]["active_tree"]["root_layer"]));
             return;
         }
 
         if (event.args["layerTreeId"] !== this._layerTreeId)
             return;
 
-        var timestamp = event.startTime / 1000;
+        var timestamp = event.startTime;
         if (event.name === eventNames.BeginFrame)
             this.handleBeginFrame(timestamp);
         else if (event.name === eventNames.DrawFrame)
             this.handleDrawFrame(timestamp);
         else if (event.name === eventNames.ActivateLayerTree)
             this.handleActivateLayerTree();
         else if (event.name === eventNames.RequestMainThreadFrame)
             this.handleRequestMainThreadFrame();
         else if (event.name === eventNames.CompositeLayers)
             this.handleCompositeLayers();
@@ skipping 273 matching lines @@
         this._updateCpuTime();
     },
 
     _updateCpuTime: function()
     {
         this.cpuTime = 0;
         for (var key in this.timeByCategory)
             this.cpuTime += this.timeByCategory[key];
     }
 }