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

extensions/renderer/resources/guest_view/guest_view_events.js

Index: extensions/renderer/resources/guest_view/guest_view_events.js
diff --git a/extensions/renderer/resources/guest_view/guest_view_events.js b/extensions/renderer/resources/guest_view/guest_view_events.js
index bb7650a59c0aacb0c4fb6fd9cf61dd570a8126a4..33d89a26798d13473547ffab2edfee9ce2351566 100644
--- a/extensions/renderer/resources/guest_view/guest_view_events.js
+++ b/extensions/renderer/resources/guest_view/guest_view_events.js
@@ -4,16 +4,18 @@
 
 // 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) {