Oilpan: Make the Node hierarchy RefCountedGarbageCollected instead of TreeShared.

Source/core/dom/FullscreenElementStack.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
@@ skipping 81 matching lines @@
     Element* webkitFullscreenElement() const { return !m_fullScreenElementStack.isEmpty() ? m_fullScreenElementStack.last().get() : 0; }
     void webkitExitFullscreen();
 
     bool webkitIsFullScreen() const { return m_fullScreenElement.get(); }
     bool webkitFullScreenKeyboardInputAllowed() const { return m_fullScreenElement.get() && m_areKeysEnabledInFullScreen; }
     Element* webkitCurrentFullScreenElement() const { return m_fullScreenElement.get(); }
 
     virtual void documentWasDetached() OVERRIDE;
     virtual void documentWasDisposed() OVERRIDE;
 
-    virtual void trace(Visitor*) OVERRIDE { }
+    virtual void trace(Visitor*) OVERRIDE;
 
 private:
     static FullscreenElementStack* fromIfExistsSlow(Document&);
 
     explicit FullscreenElementStack(Document&);
 
     Document* document();
     void fullScreenChangeDelayTimerFired(Timer<FullscreenElementStack>*);
 
     bool m_areKeysEnabledInFullScreen;
-    RefPtr<Element> m_fullScreenElement;
-    Vector<RefPtr<Element> > m_fullScreenElementStack;
+    RefPtrWillBeMember<Element> m_fullScreenElement;
+    WillBeHeapVector<RefPtrWillBeMember<Element> > m_fullScreenElementStack;
     RenderFullScreen* m_fullScreenRenderer;
     Timer<FullscreenElementStack> m_fullScreenChangeDelayTimer;
-    Deque<RefPtr<Node> > m_fullScreenChangeEventTargetQueue;
-    Deque<RefPtr<Node> > m_fullScreenErrorEventTargetQueue;
+    WillBeHeapDeque<RefPtrWillBeMember<Node> > m_fullScreenChangeEventTargetQueue;
+    WillBeHeapDeque<RefPtrWillBeMember<Node> > m_fullScreenErrorEventTargetQueue;
     LayoutRect m_savedPlaceholderFrameRect;
     RefPtr<RenderStyle> m_savedPlaceholderRenderStyle;
 };
 
 inline bool FullscreenElementStack::isActiveFullScreenElement(const Element* element)
 {
     FullscreenElementStack* controller = fromIfExists(element->document());
     if (!controller)
         return false;
     return controller->webkitIsFullScreen() && controller->webkitCurrentFullScreenElement() == element;
 }
 
 inline FullscreenElementStack* FullscreenElementStack::fromIfExists(Document& document)
 {
     if (!document.hasFullscreenElementStack())
         return 0;
     return fromIfExistsSlow(document);
 }
 
 } // namespace WebCore
 
 #endif // FullscreenElementStack_h