Oilpan: Support nested pre-finalizers

Source/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 57 matching lines @@
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(LocalDOMWindow);
     WILL_BE_USING_PRE_FINALIZER(LocalDOMWindow, dispose);
 public:
     static PassRefPtrWillBeRawPtr<Document> createDocument(const String& mimeType, const DocumentInit&, bool forceXHTML);
     static PassRefPtrWillBeRawPtr<LocalDOMWindow> create(LocalFrame& frame)
     {
         return adoptRefWillBeNoop(new LocalDOMWindow(frame));
     }
 
     virtual ~LocalDOMWindow();
-    void dispose();
 
     DECLARE_VIRTUAL_TRACE();
 
     PassRefPtrWillBeRawPtr<Document> installNewDocument(const String& mimeType, const DocumentInit&, bool forceXHTML = false);
 
     // EventTarget overrides:
     virtual ExecutionContext* executionContext() const override;
     virtual LocalDOMWindow* toDOMWindow() override;
 
     // DOMWindow overrides:
@@ skipping 138 matching lines @@
 
         // LocalFrameLifecycleObserver overrides:
         void willDetachFrameHost() override;
         void contextDestroyed() override;
 
         RawPtrWillBeMember<LocalDOMWindow> m_window;
     };
     friend WTF::OwnedPtrDeleter<WindowFrameObserver>;
 
     explicit LocalDOMWindow(LocalFrame&);
+    void dispose();
 
     Page* page();
 
     void clearDocument();
     void willDestroyDocumentInFrame();
 
     void willDetachFrameHost();
     void frameDestroyed();
 
     OwnPtrWillBeMember<WindowFrameObserver> m_frameObserver;
@@ skipping 37 matching lines @@
 }
 
 inline String LocalDOMWindow::defaultStatus() const
 {
     return m_defaultStatus;
 }
 
 } // namespace blink
 
 #endif // LocalDOMWindow_h