Convert Event#keyIdentifier (deprecated) to Event#key

ui/webui/resources/js/cr/ui/menu.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('cr.ui', function() {
 
   /** @const */ var MenuItem = cr.ui.MenuItem;
 
   /**
    * Creates a new menu element. Menu dispatches all commands on the element it
@@ skipping 223 matching lines @@
             break;
 
           item = menuItems[i];
           if (item && !item.isSeparator() && !item.hidden && !item.disabled)
             break;
         }
         if (item && !item.disabled)
           self.selectedIndex = i;
       }
 
-      switch (e.keyIdentifier) {
-        case 'Down':
+      switch (e.key) {
+        case 'ArrowDown':
           selectNextAvailable(1);
           this.focusSelectedItem();
           return true;
-        case 'Up':
+        case 'ArrowUp':
           selectNextAvailable(-1);
           this.focusSelectedItem();
           return true;
         case 'Enter':
-        case 'U+0020': // Space
+        case ' ':
           if (item) {
             // Store |contextElement| since it'll be removed when handling the
             // 'activate' event.
             var contextElement = this.contextElement;
             var activationEvent = cr.doc.createEvent('Event');
             activationEvent.initEvent('activate', true, true);
             activationEvent.originalEvent = e;
             if (item.dispatchEvent(activationEvent)) {
               if (item.command)
                 item.command.execute(contextElement);
@@ skipping 51 matching lines @@
   /**
    * Selector for children which are menu items.
    */
   cr.defineProperty(Menu, 'menuItemSelector', cr.PropertyKind.ATTR);
 
   // Export
   return {
     Menu: Menu
   };
 });