Convert Event#keyIdentifier (deprecated) to Event#key

ui/webui/resources/js/cr/ui/context_menu_handler.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.
 
 // require: event_target.js
 
 cr.define('cr.ui', function() {
   /** @const */ var EventTarget = cr.EventTarget;
   /** @const */ var Menu = cr.ui.Menu;
 
@@ skipping 119 matching lines @@
      * Handles event callbacks.
      * @param {!Event} e The event object.
      */
     handleEvent: function(e) {
       // Keep track of keydown state so that we can use that to determine the
       // reason for the contextmenu event.
       switch (e.type) {
         case 'keydown':
           this.keyIsDown_ = !e.ctrlKey && !e.altKey &&
               // context menu key or Shift-F10
-              (e.keyCode == 93 && !e.shiftKey ||
-               e.keyIdentifier == 'F10' && e.shiftKey);
+              (e.keyCode == 93 && !e.shiftKey || e.key == 'F10' && e.shiftKey);
           break;
 
         case 'keyup':
           this.keyIsDown_ = false;
           break;
       }
 
       // Context menu is handled even when we have no menu.
       if (e.type != 'contextmenu' && !this.menu)
         return;
@@ skipping 10 matching lines @@
           else
             e.preventDefault();
           break;
 
         case 'touchstart':
           if (!this.menu.contains(e.target))
             this.hideMenu();
           break;
 
         case 'keydown':
-          // keyIdentifier does not report 'Esc' correctly
-          if (e.keyCode == 27 /* Esc */) {
+          if (e.key == 'Escape') {
             this.hideMenu();
             e.stopPropagation();
             e.preventDefault();
 
           // If the menu is visible we let it handle all the keyboard events.
           } else if (this.menu) {
             this.menu.handleKeyDown(e);
             e.preventDefault();
             e.stopPropagation();
           }
@@ skipping 101 matching lines @@
    * The singleton context menu handler.
    * @type {!ContextMenuHandler}
    */
   var contextMenuHandler = new ContextMenuHandler;
 
   // Export
   return {
     contextMenuHandler: contextMenuHandler,
   };
 });