Fixed error screen behaviour when gaia frame loading is timed out.

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.
  */
 
 cr.define('login', function() {
   // Gaia loading time after which portal check should be fired.
@@ skipping 110 matching lines @@
           1000);
     },
 
     /**
      * Handler for Gaia loading timeout.
      * @private
      */
     onLoadingTimeOut_: function() {
       this.loadingTimer_ = undefined;
       this.clearRetry_();
-      $('error-message').showLoadingTimeoutError();
+      chrome.send('showLoadingTimeoutError');
     },
 
     /**
      * Clears loading timer.
      * @private
      */
     clearLoadingTimer_: function() {
       if (this.loadingTimer_) {
         window.clearTimeout(this.loadingTimer_);
         this.loadingTimer_ = undefined;
@@ skipping 326 matching lines @@
   };
 
   GaiaSigninScreen.doReload = function() {
     $('gaia-signin').doReload();
   };
 
   return {
     GaiaSigninScreen: GaiaSigninScreen
   };
 });