Remove keyIdentifier usage in chrome/browser/resources/*

chrome/browser/ui/webui/extensions/chromeos/kiosk_apps_browsertest.js

 // Copyright 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.
 
 /**
  * TestFixture for kiosk app settings WebUI testing.
  * @extends {testing.Test}
  * @constructor
  */
 function KioskAppSettingsWebUITest() {}
@@ skipping 72 matching lines @@
 });
 
 // Verify that enter key on 'kiosk-app-id-edit' adds an app.
 TEST_F('KioskAppSettingsWebUITest', 'testAddKioskApp', function() {
   var testAppId = 'app_3';
   var appIdInput = $('kiosk-app-id-edit');
 
   appIdInput.value = testAppId;
 
   this.mockHandler.expects(once()).addKioskApp([testAppId]);
-  var keypress = document.createEvent('KeyboardEvents');
-  keypress.initKeyboardEvent('keypress', true, true, null, 'Enter', '');
+  var keypress = new KeyboardEvent('keypress', {cancelable: true, bubbles: true, key: 'Enter'});
   appIdInput.dispatchEvent(keypress);
 });
 
 // Verify that the 'kiosk-app-add' button adds an app.
 TEST_F('KioskAppSettingsWebUITest', 'testAddKioskAppByAddButton', function() {
   var testAppId = 'app_3';
   $('kiosk-app-id-edit').value = testAppId;
 
   this.mockHandler.expects(once()).addKioskApp([testAppId]);
   cr.dispatchSimpleEvent($('kiosk-app-add'), 'click');
@@ skipping 122 matching lines @@
   var checkbox = $('kiosk-disable-bailout-shortcut');
 
   this.settings_.hasAutoLaunchApp = false;
   extensions.KioskAppsOverlay.setSettings(this.settings_);
   expectTrue(checkbox.disabled);
 
   this.settings_.hasAutoLaunchApp = true;
   extensions.KioskAppsOverlay.setSettings(this.settings_);
   expectFalse(checkbox.disabled);
 });