Split modules-dependent Event code in core.

Source/core/events/EventFactory.h

 /*
  * Copyright (C) 2011 Google, Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 21 matching lines @@
 
 namespace WebCore {
 
 class Event;
 
 class EventFactory {
 public:
     static PassRefPtrWillBeRawPtr<Event> create(const String& eventType);
 };
 
+class EventModulesFactory {
+public:
+    static PassRefPtrWillBeRawPtr<Event> create(const String& eventType);
+};
+
 }
 
 #endif