Make it possible to create reasonable subclasses of Event

sky/engine/core/events/Event.h

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 44 matching lines @@
     };
 
     static PassRefPtr<Event> create()
     {
         return adoptRef(new Event);
     }
 
     // A factory for a simple event. The event doesn't bubble, and isn't
     // cancelable.
     // http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#fire-a-simple-event
-    static PassRefPtr<Event> create(const AtomicString& type)
+    static PassRefPtr<Event> create(const AtomicString& type, bool bubbles = false, bool cancelable = false)
     {
-        return adoptRef(new Event(type, false, false));
+        return adoptRef(new Event(type, bubbles, cancelable));
     }
     static PassRefPtr<Event> createCancelable(const AtomicString& type)
     {
         return adoptRef(new Event(type, false, true));
     }
     static PassRefPtr<Event> createBubble(const AtomicString& type)
     {
         return adoptRef(new Event(type, true, false));
     }
     static PassRefPtr<Event> createCancelableBubble(const AtomicString& type)
@@ skipping 104 matching lines @@
     RefPtr<Event> m_underlyingEvent;
     OwnPtr<EventPath> m_eventPath;
 };
 
 #define DEFINE_EVENT_TYPE_CASTS(typeName) \
     DEFINE_TYPE_CASTS(typeName, Event, event, event->is##typeName(), event.is##typeName())
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_EVENTS_EVENT_H_