Add device disabling to OOBE flow

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

 // Copyright 2014 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 Device disabled screen implementation.
  */
 
 login.createScreen('DeviceDisabledScreen', 'device-disabled', function() {
   return {
     EXTERNAL_API: [
       'setMessage'
     ],
 
     /**
      * Event handler that is invoked just before the screen in shown.
      */
     onBeforeShow: function() {
       $('progress-dots').hidden = true;
     },
 
     /**
-      * Sets the message to show to the user. If |message| is empty, a default
-      * message will be shown.
+      * Sets the message to show to the user.
       * @param {string} message The message to show to the user.
       * @private
       */
     setMessage: function(message) {
-      $('device-disabled-message').textContent =
-          message || loadTimeData.getString('deviceDisabledDefaultMessage');
+      $('device-disabled-message').textContent = message;
     }
   };
 });