DevTools: Initial implementation of line-level CPU profile.

third_party/WebKit/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 689 matching lines @@
 
     _onClearButtonClick: function()
     {
         this._tracingModel.reset();
         this._model.reset();
         this._showRecordingHelpMessage();
     },
 
     _onRecordsCleared: function()
     {
+        WebInspector.TimelineJSProfileProcessor.resetLineLevelProfiles();

[pfeldman, 2016/03/02 19:48:59]

Lets split this change?

[alph, 2016/03/03 02:02:52]

Let me try to make it within the CL.

         this.requestWindowTimes(0, Infinity);
         delete this._selection;
         this._frameModel.reset();
         this._overviewPane.reset();
         for (var i = 0; i < this._currentViews.length; ++i)
             this._currentViews[i].reset();
         for (var i = 0; i < this._overviewControls.length; ++i)
             this._overviewControls[i].reset();
         this.select(null);
         delete this._filmStripModel;
@@ skipping 1396 matching lines @@
      * @override
      * @param {!WebInspector.Target} target
      */
     targetRemoved: function(target)
     {
         this._targets.remove(target, true);
     },
 
     __proto__: WebInspector.Object.prototype
 }