DevTools: checkboxes do not work as intended under Audits section of Devtools.

Source/devtools/front_end/audits/AuditLauncherView.js

 /*
  * Copyright (C) 2011 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 183 matching lines @@
     },
 
     /**
      * @param {boolean} checkCategories
      * @param {boolean=} userGesture
      */
     _selectAllClicked: function(checkCategories, userGesture)
     {
         var childNodes = this._categoriesElement.childNodes;
         for (var i = 0, length = childNodes.length; i < length; ++i)
-            childNodes[i].firstChild.checked = checkCategories;
+            childNodes[i].checkboxElement.checked = checkCategories;
         this._currentCategoriesCount = checkCategories ? this._sortedCategories.length : 0;
         this._selectedCategoriesUpdated(userGesture);
     },
 
     _categoryClicked: function(event)
     {
         this._currentCategoriesCount += event.target.checked ? 1 : -1;
         this._selectAllCheckboxElement.checked = this._currentCategoriesCount === this._sortedCategories.length;
         this._selectedCategoriesUpdated(true);
     },
@@ skipping 85 matching lines @@
     },
 
     _updateButton: function()
     {
         this._launchButton.textContent = this._auditRunning ? WebInspector.UIString("Stop") : WebInspector.UIString("Run");
         this._launchButton.disabled = !this._currentCategoriesCount;
     },
 
     __proto__: WebInspector.VBox.prototype
 }