Oilpan: Move CSSStyleDeclaration and subclasses to the heap using transistion 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 190 matching lines @@
         // DOM Level 2 AbstractView Interface
 
         Document* document() const;
 
         // CSSOM View Module
 
         StyleMedia& styleMedia() const;
 
         // DOM Level 2 Style Interface
 
-        PassRefPtr<CSSStyleDeclaration> getComputedStyle(Element*, const String& pseudoElt) const;
+        PassRefPtrWillBeRawPtr<CSSStyleDeclaration> getComputedStyle(Element*, const String& pseudoElt) const;
 
         // WebKit extensions
 
         PassRefPtrWillBeRawPtr<CSSRuleList> getMatchedCSSRules(Element*, const String& pseudoElt) const;
         double devicePixelRatio() const;
 
         PassRefPtr<DOMPoint> webkitConvertPointFromPageToNode(Node*, const DOMPoint*) const;
         PassRefPtr<DOMPoint> webkitConvertPointFromNodeToPage(Node*, const DOMPoint*) const;
 
         Console& console() const;
@@ skipping 155 matching lines @@
     }
 
     inline String DOMWindow::defaultStatus() const
     {
         return m_defaultStatus;
     }
 
 } // namespace WebCore
 
 #endif // DOMWindow_h