Fixed button focusing in OOBE screens.

chrome/browser/resources/chromeos/login/oobe_screen_reset.js

 // Copyright (c) 2012 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 Oobe reset screen implementation.
  */
 
 cr.define('oobe', function() {
   /**
@@ skipping 49 matching lines @@
       cancelButton.addEventListener('click', function(e) {
         chrome.send('resetOnCancel');
         e.stopPropagation();
       });
       buttons.push(cancelButton);
 
       return buttons;
     },
 
     /**
+     * Returns a control which should receive an initial focus.
+     */
+    get defaultControl() {
+      return $('reset-cancel-button');
+    },
+
+    /**
      * Cancels the reset and drops the user back to the login screen.
      */
     cancel: function() {
       chrome.send('resetOnCancel');
     },
   };
 
   return {
     ResetScreen: ResetScreen
   };
 });