DevTools: move tracing based Timeline out of experiment

Source/devtools/front_end/common/Settings.js

 /*
  * Copyright (C) 2009 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 281 matching lines @@
     this.applyCustomStylesheet = this._createExperiment("applyCustomStylesheet", "Allow custom UI themes");
     this.canvasInspection = this._createExperiment("canvasInspection ", "Canvas inspection");
     this.devicesPanel = this._createExperiment("devicesPanel", "Devices panel");
     this.disableAgentsWhenProfile = this._createExperiment("disableAgentsWhenProfile", "Disable other agents and UI when profiler is active", true);
     this.dockToLeft = this._createExperiment("dockToLeft", "Dock to left", true);
     this.documentation = this._createExperiment("documentation", "Documentation for JS and CSS", true);
     this.fileSystemInspection = this._createExperiment("fileSystemInspection", "FileSystem inspection");
     this.gpuTimeline = this._createExperiment("gpuTimeline", "GPU data on timeline", true);
     this.layersPanel = this._createExperiment("layersPanel", "Layers panel");
     this.paintProfiler = this._createExperiment("paintProfiler", "Paint profiler");
-    this.timelineOnTraceEvents = this._createExperiment("timelineOnTraceEvents", "Timeline on trace events");
     this.timelinePowerProfiler = this._createExperiment("timelinePowerProfiler", "Timeline power profiler");
     this.timelineJSCPUProfile = this._createExperiment("timelineJSCPUProfile", "Timeline with JS sampling");
 
     this._cleanUpSetting();
 }
 
 WebInspector.ExperimentsSettings.prototype = {
     /**
      * @return {!Array.<!WebInspector.Experiment>}
      */
@@ skipping 446 matching lines @@
 
     _fireChangedIfNeeded: function()
     {
         var newValue = this._calculateValue();
         if (newValue === this._value)
             return;
         this._value = newValue;
         this._eventSupport.dispatchEventToListeners(this._name, this._value);
     }
 }