Implemented new UI for error messages on OOBE/Login.

chrome/browser/resources/chromeos/login/screen_tpm_error.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 Offline message screen implementation.
  */
 
 cr.define('login', function() {
   /**
@@ skipping 10 matching lines @@
     var screen = $('tpm-error-message');
     TPMErrorMessageScreen.decorate(screen);
     Oobe.getInstance().registerScreen(screen);
   };
 
   TPMErrorMessageScreen.prototype = {
     __proto__: HTMLDivElement.prototype,
 
     /** @override */
     decorate: function() {
-    }
+    },
+
+    /**
+     * Buttons in oobe wizard's button strip.
+     * @type {array} Array of Buttons.
+     */
+     get buttons() {
+       var rebootButton = this.ownerDocument.createElement('button');
+       rebootButton.id = 'reboot-button';
+       rebootButton.textContent =
+         loadTimeData.getString('errorTpmFailureRebootButton');
+       rebootButton.addEventListener('click', function() {
+           chrome.send('rebootSystem');
+       });
+       return [rebootButton];
+     },
   };
 
   /**
    * Show TPM screen.
    */
   TPMErrorMessageScreen.show = function() {
     Oobe.showScreen({id: SCREEN_TPM_ERROR});
   };
 
   return {
     TPMErrorMessageScreen: TPMErrorMessageScreen
   };
 });