Remove keyIdentifier usage in chrome/browser/resources/*

chrome/browser/resources/ntp4/page_list_view.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.
 
 /**
  * @fileoverview PageListView implementation.
  * PageListView manages page list, dot list, switcher buttons and handles apps
  * pages callbacks from backend.
  *
  * Note that you need to have AppLauncherHandler in your WebUI to use this code.
@@ skipping 714 matching lines @@
      * Handler for key events on the page. Ctrl-Arrow will switch the visible
      * page.
      * @param {Event} e The KeyboardEvent.
      * @private
      */
     onDocKeyDown_: function(e) {
       if (!e.ctrlKey || e.altKey || e.metaKey || e.shiftKey)
         return;
 
       var direction = 0;
-      if (e.keyIdentifier == 'Left')
+      if (e.key == 'ArrowLeft')
         direction = -1;
-      else if (e.keyIdentifier == 'Right')
+      else if (e.key == 'ArrowRight')
         direction = 1;
       else
         return;
 
       var cardIndex =
           (this.cardSlider.currentCard + direction +
            this.cardSlider.cardCount) % this.cardSlider.cardCount;
       this.cardSlider.selectCard(cardIndex, true);
 
       e.stopPropagation();
@@ skipping 18 matching lines @@
       if (page.navigationDot)
         page.navigationDot.remove(opt_animate);
       this.cardSlider.removeCard(page);
     },
   };
 
   return {
     PageListView: PageListView
   };
 });