Remove keyIdentifier usage in chrome/browser/resources/*

chrome/browser/resources/chromeos/chromevox/cvox2/background/i_search.js

 // Copyright 2016 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 Objects related to incremental search.
  */
 
 goog.provide('ISearch');
 goog.provide('ISearchHandler');
@@ skipping 129 matching lines @@
   return ISearchUI.instance_;
 };
 
 ISearchUI.prototype = {
   /**
    * Listens to key down events.
    * @param {Event} evt
    * @return {boolean}
    */
   onKeyDown: function(evt) {
-    switch (evt.keyIdentifier) {
-      case 'Up':
+    switch (evt.key) {
+      case 'ArrowUp':
         this.dir_ = Dir.BACKWARD;
         break;
-      case 'Down':
+      case 'ArrowDown':
         this.dir_ = Dir.FORWARD;
         break;
-      case 'U+001B':  // Escape
+      case 'Escape':
         this.pendingSearchId_ = 0;
         this.background_['endExcursion']();
         Panel.closeMenusAndRestoreFocus();
         return false;
       case 'Enter':
         this.pendingSearchId_ = 0;
         this.background_['saveExcursion']();
         Panel.closeMenusAndRestoreFocus();
         return false;
       default:
@@ skipping 48 matching lines @@
     this.iSearch_.handler_ = null;
     this.iSearch_ = null;
     var input = this.input_;
     this.input_ = null;
     input.removeEventListener('keydown', this.onKeyDown, true);
     input.removeEventListener('textInput', this.onTextInput, true);
   }
 };
 
 });  // goog.scope