[Extensions Bindings] Don't allow `event` module with native bindings

extensions/renderer/resources/guest_view/guest_view_events.js

 // Copyright 2015 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.
 
 // Event management for GuestViewContainers.
 
-var EventBindings = require('event_bindings');
 var GuestViewInternalNatives = requireNative('guest_view_internal');
 var MessagingNatives = requireNative('messaging_natives');
 
 var EventBindings;
 var CreateEvent = function(name) {
   if (bindingUtil) {
     return bindingUtil.createCustomEvent(name, null,
                                          true /* supportsFilters */);
   }
   var eventOpts = {supportsListeners: true, supportsFilters: true};
@@ skipping 165 matching lines @@
     return $Function.apply(func, view.events, $Array.slice(arguments));
   };
 };
 
 // Implemented by the derived event manager, if one exists.
 GuestViewEvents.prototype.getEvents = function() { return {}; };
 
 // Exports.
 exports.$set('GuestViewEvents', GuestViewEvents);
 exports.$set('CreateEvent', CreateEvent);