Remove lots of dead virtuals from Element.

sky/engine/core/events/MouseEvent.cpp

 /*
  * 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, 2005, 2006, 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 230 matching lines @@
     return toMouseEvent(EventDispatchMediator::event());
 }
 
 bool MouseEventDispatchMediator::dispatchEvent(EventDispatcher* dispatcher) const
 {
     if (isSyntheticMouseEvent()) {
         event()->eventPath().adjustForRelatedTarget(dispatcher->node(), event()->relatedTarget());
         return dispatcher->dispatch();
     }
 
-    if (isDisabledFormControl(dispatcher->node()))
-        return false;
-
     if (event()->type().isEmpty())
         return true; // Shouldn't happen.
 
     ASSERT(!event()->target() || event()->target() != event()->relatedTarget());
 
     EventTarget* relatedTarget = event()->relatedTarget();
     event()->eventPath().adjustForRelatedTarget(dispatcher->node(), relatedTarget);
 
     dispatcher->dispatch();
     bool swallowEvent = event()->defaultHandled() || event()->defaultPrevented();
@@ skipping 11 matching lines @@
                                      event()->button(), relatedTarget);
     if (event()->defaultHandled())
         doubleClickEvent->setDefaultHandled();
     EventDispatcher::dispatchEvent(dispatcher->node(), MouseEventDispatchMediator::create(doubleClickEvent));
     if (doubleClickEvent->defaultHandled() || doubleClickEvent->defaultPrevented())
         return false;
     return !swallowEvent;
 }
 
 } // namespace blink