Clean up forward declarations in Source/core

Source/core/dom/ScriptRunner.h

 /*
  * Copyright (C) 2010 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 18 matching lines @@
 #include "core/fetch/ResourcePtr.h"
 #include "platform/Timer.h"
 #include "platform/heap/Handle.h"
 #include "wtf/HashMap.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
-class ScriptResource;
 class Document;
 class ScriptLoader;
 
 class ScriptRunner final : public NoBaseWillBeGarbageCollectedFinalized<ScriptRunner> {
     WTF_MAKE_NONCOPYABLE(ScriptRunner); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
     static PassOwnPtrWillBeRawPtr<ScriptRunner> create(Document* document)
     {
         return adoptPtrWillBeNoop(new ScriptRunner(document));
     }
@@ skipping 22 matching lines @@
     WillBeHeapVector<RawPtrWillBeMember<ScriptLoader> > m_scriptsToExecuteInOrder;
     // http://www.whatwg.org/specs/web-apps/current-work/#set-of-scripts-that-will-execute-as-soon-as-possible
     WillBeHeapVector<RawPtrWillBeMember<ScriptLoader> > m_scriptsToExecuteSoon;
     WillBeHeapHashSet<RawPtrWillBeMember<ScriptLoader> > m_pendingAsyncScripts;
     Timer<ScriptRunner> m_timer;
 };
 
 }
 
 #endif