Remove keyIdentifier usage in chrome/browser/resources/*

chrome/browser/resources/extensions/extension_error.js

 // Copyright 2013 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('extensions', function() {
   'use strict';
 
   /**
    * Clone a template within the extension error template collection.
    * @param {string} templateName The class name of the template to clone.
@@ skipping 94 matching lines @@
             new CustomEvent('deleteExtensionError',
                             {bubbles: true, detail: this.error}));
       }.bind(this));
 
       this.addEventListener('click', function(e) {
         if (e.target != deleteButton)
           this.requestActive_();
       }.bind(this));
 
       this.addEventListener('keydown', function(e) {
-        if (e.keyIdentifier == 'Enter' && e.target != deleteButton)
+        if (e.key == 'Enter' && e.target != deleteButton)
           this.requestActive_();
       });
     },
 
     /**
      * Bubble up an event to request to become active.
      * @private
      */
     requestActive_: function() {
       this.dispatchEvent(
@@ skipping 241 matching lines @@
       this.dispatchEvent(
           new CustomEvent('activeExtensionErrorChanged',
                           {bubbles: true, detail: node ? node.error : null}));
     },
   };
 
   return {
     ExtensionErrorList: ExtensionErrorList
   };
 });