Moving the contents of chrome://gpu Profiling to chrome://tracing.

chrome/browser/resources/tracing/overlay.js

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 
 /**
  * @fileoverview Implements an element that is hidden by default, but
  * when shown, dims and (attempts to) disable the main document.
  *
  * You can turn any div into an overlay. Note that while an
  * overlay element is shown, its parent is changed. Hiding the overlay
  * restores its original parentage.
  *
  */
-cr.define('gpu', function() {
+cr.define('tracing', function() {
   /**
    * Manages a full-window div that darkens the window, disables
    * input, and hosts the currently-visible overlays. You shouldn't
    * have to instantiate this directly --- it gets set automatically.
    * @param {Object=} opt_propertyBag Optional properties.
    * @constructor
    * @extends {HTMLDivElement}
    */
   var OverlayRoot = cr.ui.define('div');
   OverlayRoot.prototype = {
@@ skipping 142 matching lines @@
    * Shows and hides the overlay. Note that while visible == true, the overlay
    * element will be tempoarily reparented to another place in the DOM.
    */
   cr.defineProperty(Overlay, 'visible', cr.PropertyKind.BOOL_ATTR,
       Overlay.prototype.onVisibleChanged_);
 
   return {
     Overlay: Overlay
   };
 });