Prevented false error messages from user manager UI.

chrome/browser/resources/chromeos/login/screen_gaia_signin.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 signin screen implementation.
  */
 
 <include src="../../gaia_auth_host/gaia_auth_host.js">
 
@@ skipping 206 matching lines @@
      *                      page.
      */
     onBeforeShow: function(data) {
       chrome.send('loginUIStateChanged', ['gaia-signin', true]);
       $('login-header-bar').signinUIState =
           this.isEnrollingConsumerManagement_ ?
           SIGNIN_UI_STATE.CONSUMER_MANAGEMENT_ENROLLMENT :
           SIGNIN_UI_STATE.GAIA_SIGNIN;
 
       // Ensure that GAIA signin (or loading UI) is actually visible.
-      window.webkitRequestAnimationFrame(function() {
+      window.requestAnimationFrame(function() {
         chrome.send('loginVisible', ['gaia-loading']);
       });
 
       // Button header is always visible when sign in is presented.
       // Header is hidden once GAIA reports on successful sign in.
       Oobe.getInstance().headerHidden = false;
     },
 
     /**
      * Event handler that is invoked just before the screen is hidden.
@@ skipping 410 matching lines @@
      * For more info see C++ class 'WebUILoginView' which calls this method.
      * @param {number} error Error code.
      * @param {string} url The URL that failed to load.
      */
     onFrameError: function(error, url) {
       this.error_ = error;
       chrome.send('frameLoadingCompleted', [this.error_]);
     },
   };
 });