Remove the use of KeyEvent.keyIdentifier.

ui/file_manager/gallery/js/image_editor/image_transform.js

 // Copyright 2014 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.
 
 /**
  * Crop mode.
  *
  * @extends {ImageEditor.Mode}
  * @constructor
  * @struct
@@ skipping 134 matching lines @@
 
   for (var name in aspects) {
     var button = toolbar.addButton(
         name,
         ImageEditor.Toolbar.ButtonType.LABEL,
         this.onCropAspectRatioClicked_.bind(this, toolbar, aspects[name]),
         'crop-aspect-ratio');
 
     // Prevent from cropping by Enter key if the button is focused.
     button.addEventListener('keydown', function(event) {
-      var key = util.getKeyModifiers(event) + event.keyIdentifier;
+      var key = util.getKeyModifiers(event) + event.key;
       if (key === 'Enter')
         event.stopPropagation();
     });
   }
 };
 
 /**
  * Handles click events of crop aspect ratio buttons.
  * @param {!ImageEditor.Toolbar} toolbar Toolbar.
  * @param {number} aspect Aspect ratio.
@@ skipping 571 matching lines @@
       break;
     case 'bottom':
       this.bounds_.bottom = this.bounds_.top + newHeight;
       break;
     case 'none':
       this.bounds_.top = middle - newHeight / 2;
       this.bounds_.bottom = middle + newHeight / 2;
       break;
   }
 };