DevTools: Add custom CPU throttling option to timeline.

third_party/WebKit/Source/devtools/front_end/sources/AddSourceMapURLDialog.js

 // Copyright 2014 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.
 
 /**
  * @constructor
  * @extends {WebInspector.HBox}
  * @param {function(string)} callback
  */
 WebInspector.AddSourceMapURLDialog = function(callback)
 {
     WebInspector.HBox.call(this, true);
-    this.registerRequiredCSS("sources/addSourceMapURLDialog.css");
+    this.registerRequiredCSS("ui_lazy/dialog.css");
     this.contentElement.createChild("label").textContent = WebInspector.UIString("Source map URL: ");
 
     this._input = this.contentElement.createChild("input");
     this._input.setAttribute("type", "text");
     this._input.addEventListener("keydown", this._onKeyDown.bind(this), false);
 
     var addButton = this.contentElement.createChild("button");
     addButton.textContent = WebInspector.UIString("Add");
     addButton.addEventListener("click", this._apply.bind(this), false);
 
@@ skipping 35 matching lines @@
     _onKeyDown: function(event)
     {
         if (event.keyCode === WebInspector.KeyboardShortcut.Keys.Enter.code) {
             event.preventDefault();
             this._apply();
         }
     },
 
     __proto__: WebInspector.HBox.prototype
 }