Remove keyIdentifier usage in chrome/browser/resources/*

chrome/browser/resources/options/language_dictionary_overlay.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.
 
 cr.define('options', function() {
   /** @const */ var DictionaryWordsList =
       options.dictionary_words.DictionaryWordsList;
   /** @const */ var Page = cr.ui.pageManager.Page;
   /** @const */ var PageManager = cr.ui.pageManager.PageManager;
 
@@ skipping 45 matching lines @@
         this.onWordListChanged_();
       }.bind(this);
 
       this.searchField_ = $('language-dictionary-overlay-search-field');
       this.searchField_.onsearch = function(e) {
         this.wordList_.search(e.currentTarget.value);
       }.bind(this);
       this.searchField_.onkeydown = function(e) {
         // Don't propagate enter key events. Otherwise the default button will
         // activate.
-        if (e.keyIdentifier == 'Enter')
+        if (e.key == 'Enter')
           e.stopPropagation();
       };
 
       this.noMatchesLabel_ = getRequiredElement(
           'language-dictionary-overlay-no-matches');
 
       $('language-dictionary-overlay-done-button').onclick = function(e) {
         PageManager.closeOverlay();
       };
     },
@@ skipping 31 matching lines @@
   };
 
   EditDictionaryOverlay.getWordListForTesting = function() {
     return EditDictionaryOverlay.getInstance().wordList_;
   };
 
   return {
     EditDictionaryOverlay: EditDictionaryOverlay
   };
 });