Remove keyIdentifier usage in chrome/browser/resources/*

chrome/browser/resources/options/language_options.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.
 
 // TODO(kochi): Generalize the notification as a component and put it
 // in js/cr/ui/notification.js .
 
 cr.define('options', function() {
   /** @const */ var Page = cr.ui.pageManager.Page;
   /** @const */ var PageManager = cr.ui.pageManager.PageManager;
@@ skipping 1245 matching lines @@
 
       function delayedHide() {
         this.notificationTimeout_ = window.setTimeout(hide, delay);
       }
 
       notificationElement.firstElementChild.textContent = text;
       actionLink.textContent = actionText;
 
       actionLink.onclick = hide;
       actionLink.onkeydown = function(e) {
-        if (e.keyIdentifier == 'Enter') {
+        if (e.key == 'Enter') {
           hide();
         }
       };
       notificationElement.onmouseover = show;
       notificationElement.onmouseout = delayedHide;
       actionLink.onfocus = show;
       actionLink.onblur = delayedHide;
       // Enable tabbing to the link now that it is shown.
       actionLink.tabIndex = 0;
 
@@ skipping 160 matching lines @@
 
   LanguageOptions.onDictionaryDownloadFailure = function(languageCode) {
     LanguageOptions.getInstance().onDictionaryDownloadFailure_(languageCode);
   };
 
   // Export
   return {
     LanguageOptions: LanguageOptions
   };
 });