Remove more oilpan.

sky/engine/core/frame/LocalDOMWindow.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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
@@ skipping 65 matching lines @@
 enum PageshowEventPersistence {
     PageshowEventNotPersisted = 0,
     PageshowEventPersisted = 1
 };
 
 enum SetLocationLocking { LockHistoryBasedOnGestureState, LockHistoryAndBackForwardList };
 
 class LocalDOMWindow final : public RefCounted<LocalDOMWindow>, public EventTargetWithInlineData, public DOMWindowBase64, public FrameDestructionObserver, public Supplementable<LocalDOMWindow>, public LifecycleContext<LocalDOMWindow> {
     DEFINE_WRAPPERTYPEINFO();
     REFCOUNTED_EVENT_TARGET(LocalDOMWindow);
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(LocalDOMWindow);
 public:
     static PassRefPtr<LocalDOMWindow> create(LocalFrame& frame)
     {
         return adoptRef(new LocalDOMWindow(frame));
     }
     virtual ~LocalDOMWindow();
 
     PassRefPtr<Document> installNewDocument(const DocumentInit&);
 
     virtual const AtomicString& interfaceName() const override;
@@ skipping 154 matching lines @@
 
     mutable RefPtr<DOMWindowCSS> m_css;
 
     RefPtr<DOMWindowEventQueue> m_eventQueue;
     RefPtr<SerializedScriptValue> m_pendingStateObject;
 };
 
 } // namespace blink
 
 #endif // LocalDOMWindow_h