Introduce TracingTimelineModel

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 139 matching lines @@
         this._sessionId = sessionId;
         for (var i = 0; i < events.length; ++i)
             this._addTraceEvent(events[i]);
     },
 
     /**
      * @param {!WebInspector.TracingModel.Event} event
      */
     _addTraceEvent: function(event)
     {
-        var eventNames = WebInspector.TimelineTraceEventBindings.RecordType;
+        var eventNames = WebInspector.TracingTimelineModel.RecordType;
 
         if (event.name === eventNames.SetLayerTreeId) {
             if (this._sessionId === event.args["sessionId"])
                 this._layerTreeId = event.args["layerTreeId"];
             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;
         }
@@ skipping 288 matching lines @@
         this._updateCpuTime();
     },
 
     _updateCpuTime: function()
     {
         this.cpuTime = 0;
         for (var key in this.timeByCategory)
             this.cpuTime += this.timeByCategory[key];
     }
 }