Remove the use of KeyEvent.keyIdentifier.

ui/file_manager/gallery/js/image_editor/image_editor.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.
 
 /**
  * ImageEditor is the top level object that holds together and connects
  * everything needed for image editing.
  *
  * @param {!Viewport} viewport The viewport.
  * @param {!ImageView} imageView The ImageView containing the images to edit.
@@ skipping 730 matching lines @@
   }
   console.error('Mode "' + name + '" not found.');
 };
 
 /**
  * Key down handler.
  * @param {!Event} event The keydown event.
  * @return {boolean} True if handled.
  */
 ImageEditor.prototype.onKeyDown = function(event) {
-  switch (util.getKeyModifiers(event) + event.keyIdentifier) {
-    case 'U+001B': // Escape
+  switch (util.getKeyModifiers(event) + event.key) {
+    case 'Escape':
     case 'Enter':
       if (this.getMode()) {
-        this.leaveModeInternal_(event.keyIdentifier === 'Enter',
+        this.leaveModeInternal_(event.key === 'Enter',
             false /* not to switch mode */);
         return true;
       }
       break;
 
-    case 'Ctrl-U+005A':  // Ctrl+Z
+    case 'Ctrl-z':  // Ctrl+Z
       if (this.commandQueue_.canUndo()) {
         this.undo();
         return true;
       }
       break;
 
-    case 'Ctrl-U+0059':  // Ctrl+Y
+    case 'Ctrl-y':  // Ctrl+Y
       if (this.commandQueue_.canRedo()) {
         this.redo();
         return true;
       }
       break;
 
-    case 'U+0041':  // 'a'
+    case 'a':
       this.enterModeByName_('autofix');
       return true;
 
-    case 'U+0042':  // 'b'
+    case 'b':
       this.enterModeByName_('exposure');
       return true;
 
-    case 'U+0043':  // 'c'
+    case 'c':
       this.enterModeByName_('crop');
       return true;
 
-    case 'U+004C':  // 'l'
+    case 'l':
       this.enterModeByName_('rotate_left');
       return true;
 
-    case 'U+0052':  // 'r'
+    case 'r':
       this.enterModeByName_('rotate_right');
       return true;
   }
   return false;
 };
 
 /**
  * Double tap handler.
  * @param {number} x X coordinate of the event.
  * @param {number} y Y coordinate of the event.
@@ skipping 464 matching lines @@
 
   button.label = strf(title);
   button.setAttribute('aria-label', strf(title));
 
   GalleryUtil.decorateMouseFocusHandling(button);
 
   button.addEventListener('click', handler, false);
   button.addEventListener('keydown', function(event) {
     // Stop propagation of Enter key event to prevent it from being captured by
     // image editor.
-    if (event.keyIdentifier === 'Enter')
+    if (event.key === 'Enter')
       event.stopPropagation();
   });
 
   return button;
 };
 
 /**
  * Add a button.
  *
  * @param {string} title Button title.
@@ skipping 49 matching lines @@
   range.appendChild(slider);
 
   range.name = name;
   range.getValue = function(slider, scale) {
     return slider.value / scale;
   }.bind(this, slider, scale);
 
   // Swallow the left and right keys, so they are not handled by other
   // listeners.
   range.addEventListener('keydown', function(e) {
-    if (e.keyIdentifier === 'Left' || e.keyIdentifier === 'Right')
+    if (e.key === 'ArrowLeft' || e.key === 'ArrowRight')
       e.stopPropagation();
   });
 
   this.add(range);
 
   return range;
 };
 
 /**
  * @return {!Object} options A map of options.
@@ skipping 171 matching lines @@
 
 /**
  * Hide the prompt.
  */
 ImageEditor.Prompt.prototype.hide = function() {
   if (!this.prompt_) return;
   this.prompt_.setAttribute('state', 'fadeout');
   // Allow some time for the animation to play out.
   this.setTimer(this.reset.bind(this), 500);
 };