Revert of [Extensions] Un-filter-ify and Un-managed-ify webview events

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 jsEvent;
+var EventBindings;
 var CreateEvent = function(name) {
+  var eventOpts = {supportsListeners: true, supportsFilters: true};
   if (bindingUtil)
-    return bindingUtil.createCustomEvent(name, undefined, undefined);
-  if (!jsEvent)
-    jsEvent = require('event_bindings').Event;
-  return new jsEvent(name, undefined, {unmanaged: true});
+    return bindingUtil.createCustomEvent(name, null, eventOpts);
+  if (!EventBindings)
+    EventBindings = require('event_bindings');
+  return new EventBindings.Event(name, undefined, eventOpts);
 };
 
 function GuestViewEvents(view) {
   view.events = this;
 
   this.view = view;
   this.on = {};
 
   // |setupEventProperty| is normally called automatically, but these events are
   // are registered here because they are dispatched from GuestViewContainer
@@ skipping 151 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);