Revert "Support warning decorations in Timeline flame chart based on trace events"

Source/devtools/front_end/timeline/TimelinePanel.js

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel 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.
@@ skipping 28 matching lines @@
 importScript("TimelineFrameModel.js");
 importScript("TimelineEventOverview.js");
 importScript("TimelineFrameOverview.js");
 importScript("TimelineMemoryOverview.js");
 importScript("TimelinePowerGraph.js");
 importScript("TimelinePowerOverview.js");
 importScript("TimelineFlameChart.js");
 importScript("TimelineUIUtils.js");
 importScript("TimelineView.js");
 importScript("TimelineTracingView.js");
-importScript("TracingModel.js");
 
 /**
  * @constructor
  * @extends {WebInspector.Panel}
  * @implements {WebInspector.TimelineModeViewDelegate}
  * @implements {WebInspector.Searchable}
  */
 WebInspector.TimelinePanel = function()
 {
     WebInspector.Panel.call(this, "timeline");
@@ skipping 1296 matching lines @@
      * @param {!WebInspector.TimelineModel.Record} record
      * @return {boolean}
      */
     accept: function(record)
     {
         return !this._hiddenRecords[record.type()];
     },
 
     __proto__: WebInspector.TimelineModel.Filter.prototype
 }