Remove keyIdentifier usage in chrome/browser/resources/*

chrome/browser/resources/chromeos/keyboard/keyboard_utils.js

 // Copyright (c) 2013 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.
 
 /**
  * Namespace for keyboard utility functions.
  */
 var keyboard = {};
 
 /**
  * Swallows keypress and keyup events of arrow keys.
  * @param {Event} event Raised event.
  * @private
  */
 keyboard.onKeyIgnore_ = function(event) {
   event = /** @type {KeyboardEvent} */(event);
 
   if (event.ctrlKey || event.shiftKey || event.altKey || event.metaKey)
     return;
 
-  if (event.keyIdentifier == 'Left' ||
-      event.keyIdentifier == 'Right' ||
-      event.keyIdentifier == 'Up' ||
-      event.keyIdentifier == 'Down') {
+  if (event.key == 'ArrowLeft' ||
+      event.key == 'ArrowRight' ||
+      event.key == 'ArrowUp' ||
+      event.key == 'ArrowDown') {
     event.stopPropagation();
     event.preventDefault();
   }
 };
 
 /**
  * Converts arrow keys into tab/shift-tab key events.
  * @param {Event} event Raised event.
  * @private
  */
@@ skipping 11 matching lines @@
   // $ is defined differently depending on how this file gets executed; we have
   // to use document.getElementById to get consistent behavior.
   //
   // See crbug.com/543865.
   if (document.activeElement ===
       document.getElementById('oauth-enroll-auth-view'))
     return;
 
   var needsUpDownKeys = event.target.classList.contains('needs-up-down-keys');
 
-  if (event.keyIdentifier == 'Left' ||
-      (!needsUpDownKeys && event.keyIdentifier == 'Up')) {
+  if (event.key == 'ArrowLeft' ||
+      (!needsUpDownKeys && event.key == 'ArrowUp')) {
     keyboard.raiseKeyFocusPrevious(document.activeElement);
     event.stopPropagation();
     event.preventDefault();
-  } else if (event.keyIdentifier == 'Right' ||
-             (!needsUpDownKeys && event.keyIdentifier == 'Down')) {
+  } else if (event.key == 'ArrowRight' ||
+             (!needsUpDownKeys && event.key == 'ArrowDown')) {
     keyboard.raiseKeyFocusNext(document.activeElement);
     event.stopPropagation();
     event.preventDefault();
   }
 };
 
 /**
  * Raises tab/shift-tab keyboard events.
  * @param {HTMLElement} element Element that should receive the event.
  * @param {string} eventType Keyboard event type.
@@ skipping 40 matching lines @@
  * Initializes event handling for arrow keys driven focus flow.
  */
 keyboard.initializeKeyboardFlow = function() {
   document.addEventListener('keydown',
       keyboard.onKeyDown_, true);
   document.addEventListener('keypress',
       keyboard.onKeyIgnore_, true);
   document.addEventListener('keyup',
       keyboard.onKeyIgnore_, true);
 };