[DevTools] Added public method for async execution of scripts

Source/core/frame/DOMWindowTimers.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2013 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
@@ skipping 20 matching lines @@
  */
 
 #ifndef DOMWindowTimers_h
 #define DOMWindowTimers_h
 
 #include "wtf/Forward.h"
 
 namespace blink {
 
 class EventTarget;
-class ScheduledAction;
+class ScheduledActionBase;
 
 namespace DOMWindowTimers {
-int setTimeout(EventTarget&, PassOwnPtr<ScheduledAction>, int timeout);
-int setInterval(EventTarget&, PassOwnPtr<ScheduledAction>, int timeout);
+int setTimeout(EventTarget&, PassOwnPtr<ScheduledActionBase>, int timeout);
+int setInterval(EventTarget&, PassOwnPtr<ScheduledActionBase>, int timeout);
 void clearTimeout(EventTarget&, int timeoutId);
 void clearInterval(EventTarget&, int timeoutId);
 }
 
 } // namespace blink
 
 #endif // DOMWindowTimers_h