Remove keyIdentifier usage in chrome/browser/resources/*

chrome/browser/resources/history/history.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.
 
 <include src="../synthetic_middleclick.js">
 <include src="../uber/uber_utils.js">
 <include src="history_focus_manager.js">
 
 ///////////////////////////////////////////////////////////////////////////////
 // Globals:
@@ skipping 484 matching lines @@
   historyView.setSearch(this.domain_);
   $('search-field').focus();
 };
 
 /**
  * @param {Event} e A keydown event to handle.
  * @private
  */
 Visit.prototype.handleKeydown_ = function(e) {
   // Delete or Backspace should delete the entry if allowed.
-  if (e.keyIdentifier == 'U+0008' || e.keyIdentifier == 'U+007F')
+  if (e.key == 'Backspace' || e.key == 'Delete')
     this.removeEntryFromHistory_(e);
 };
 
 /**
  * @param {Event} event A mousedown event.
  * @private
  */
 Visit.prototype.handleMousedown_ = function(event) {
   // Prevent text selection when shift-clicking to select multiple entries.
   if (event.shiftKey) {
@@ skipping 1888 matching lines @@
     historyView.reload();
 }
 
 // Add handlers to HTML elements.
 document.addEventListener('DOMContentLoaded', load);
 
 // This event lets us enable and disable menu items before the menu is shown.
 document.addEventListener('canExecute', function(e) {
   e.canExecute = true;
 });