Oilpan: Replace RefPtrs to Node and its subclasses in core/xml/ with Oilpan transition types.

Source/core/frame/DOMWindow.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 78 matching lines @@
     PageshowEventNotPersisted = 0,
     PageshowEventPersisted = 1
 };
 
     enum SetLocationLocking { LockHistoryBasedOnGestureState, LockHistoryAndBackForwardList };
 
     class DOMWindow FINAL : public RefCountedWillBeRefCountedGarbageCollected<DOMWindow>, public ScriptWrappable, public EventTargetWithInlineData, public DOMWindowBase64, public FrameDestructionObserver, public WillBeHeapSupplementable<DOMWindow>, public LifecycleContext<DOMWindow> {
         WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DOMWindow);
         DEFINE_EVENT_TARGET_REFCOUNTING(RefCountedWillBeRefCountedGarbageCollected<DOMWindow>);
     public:
-        static PassRefPtr<Document> createDocument(const String& mimeType, const DocumentInit&, bool forceXHTML);
+        static PassRefPtrWillBeRawPtr<Document> createDocument(const String& mimeType, const DocumentInit&, bool forceXHTML);
         static PassRefPtrWillBeRawPtr<DOMWindow> create(LocalFrame& frame)
         {
             return adoptRefWillBeRefCountedGarbageCollected(new DOMWindow(frame));
         }
         virtual ~DOMWindow();
 
-        PassRefPtr<Document> installNewDocument(const String& mimeType, const DocumentInit&, bool forceXHTML = false);
+        PassRefPtrWillBeRawPtr<Document> installNewDocument(const String& mimeType, const DocumentInit&, bool forceXHTML = false);
 
         virtual const AtomicString& interfaceName() const OVERRIDE;
         virtual ExecutionContext* executionContext() const OVERRIDE;
 
         virtual DOMWindow* toDOMWindow() OVERRIDE;
 
         void registerProperty(DOMWindowProperty*);
         void unregisterProperty(DOMWindowProperty*);
 
         void reset();
@@ skipping 269 matching lines @@
     }
 
     inline String DOMWindow::defaultStatus() const
     {
         return m_defaultStatus;
     }
 
 } // namespace WebCore
 
 #endif // DOMWindow_h