[Extensions Bindings] Correctly create the sendMessage webview event

extensions/renderer/resources/guest_view/web_view/web_view_events.js

 // Copyright 2014 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 WebView.
 
 var CreateEvent = require('guestViewEvents').CreateEvent;
 var DeclarativeWebRequestSchema =
     requireNative('schema_registry').GetSchema('declarativeWebRequest');
 var GuestViewEvents = require('guestViewEvents').GuestViewEvents;
@@ skipping 18 matching lines @@
 function createCustomDeclarativeEvent(name, schema, options, webviewId) {
   if (bindingUtil) {
     return bindingUtil.createCustomDeclarativeEvent(
         name, options.actions, options.conditions, webviewId || 0);
   }
   if (!jsEvent)
     jsEvent = require('event_bindings').Event;
   return new jsEvent(name, schema, options, webviewId);
 }
 
+function createCustomEvent(name, schema, options) {
+  if (bindingUtil)
+    return bindingUtil.createCustomEvent(name, undefined, false);
+  if (!jsEvent)
+    jsEvent = require('event_bindings').Event;
+  return new jsEvent(name, schema, options);
+}
+
 function createOnMessageEvent(name, schema, options, webviewId) {
   var subEventName = name + '/' + IdGenerator.GetNextId();
-  var newEvent = createCustomDeclarativeEvent(subEventName,
-                                              schema,
-                                              options,
-                                              webviewId);
+  var newEvent = createCustomEvent(subEventName, schema, options);
 
   var view = GuestViewInternalNatives.GetViewFromID(webviewId || 0);
   if (view) {
     view.events.addScopedListener(
         WebRequestMessageEvent,
         $Function.bind(function() {
           // Re-dispatch to subEvent's listeners.
           $Function.apply(newEvent.dispatch, newEvent, $Array.slice(arguments));
         }, newEvent),
         {instanceId: webviewId || 0});
@@ skipping 254 matching lines @@
   }
 };
 
 WebViewEvents.prototype.handleSizeChangedEvent = function(event, eventName) {
   var webViewEvent = this.makeDomEvent(event, eventName);
   this.view.onSizeChanged(webViewEvent);
 };
 
 // Exports.
 exports.$set('WebViewEvents', WebViewEvents);