Bootstrapping: Display meaningful enrollment error message on Slave device.

chrome/browser/resources/chromeos/login/host-pairing-screen.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.
 
 Polymer({
   is: 'host-pairing-page',
 
   behaviors: [Polymer.NeonAnimatableBehavior]
 });
 
 Polymer((function() {
   'use strict';
 
   /** @const */ var CALLBACK_CONTEXT_READY = 'contextReady';
 
   return {
     is: 'host-pairing-screen',
 
     behaviors: [login.OobeScreenBehavior],
 
     onBeforeShow: function() {
       Oobe.getInstance().headerHidden = true;
     },
 
     /** @override */
     initialize: function() {
       ['code',
        'deviceName',
        'enrollmentDomain',
-       'page'].forEach(this.registerBoundContextField, this);
+       'page',
+       'enrollmentError'].forEach(this.registerBoundContextField, this);
       this.send(CALLBACK_CONTEXT_READY);
     },
 
     i18n: function(args) {
       return loadTimeData.getStringF.apply(loadTimeData, args);
     },
 
     getEnrollmentStepTitle_: function(enrollmentDomain) {
       return this.i18n(['loginHostPairingScreenEnrollingTitle',
                        enrollmentDomain]);
     }
   };
 })());