Oilpan: Change Persistent members of Resource subclasses to Member.

Source/core/fetch/CSSStyleSheetResource.h

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
@@ skipping 23 matching lines @@
 
 class CSSParserContext;
 class ResourceClient;
 class StyleSheetContents;
 class TextResourceDecoder;
 
 class CSSStyleSheetResource FINAL : public StyleSheetResource {
 public:
     CSSStyleSheetResource(const ResourceRequest&, const String& charset);
     virtual ~CSSStyleSheetResource();
+    virtual void trace(Visitor*) OVERRIDE;
 
     const String sheetText(bool enforceMIMEType = true, bool* hasValidMIMEType = 0) const;
 
     virtual void didAddClient(ResourceClient*) OVERRIDE;
 
     PassRefPtrWillBeRawPtr<StyleSheetContents> restoreParsedStyleSheet(const CSSParserContext&);
     void saveParsedStyleSheet(PassRefPtrWillBeRawPtr<StyleSheetContents>);
 
 protected:
     virtual bool isSafeToUnlock() const OVERRIDE;
     virtual void destroyDecodedDataIfPossible() OVERRIDE;
 
 private:
     bool canUseSheet(bool enforceMIMEType, bool* hasValidMIMEType) const;
     virtual void dispose() OVERRIDE;
     virtual void checkNotify() OVERRIDE;
 
     String m_decodedSheetText;
 
-    RefPtrWillBePersistent<StyleSheetContents> m_parsedStyleSheetCache;
+    RefPtrWillBeMember<StyleSheetContents> m_parsedStyleSheetCache;
 };
 
 DEFINE_RESOURCE_TYPE_CASTS(CSSStyleSheet);
 
 }
 
 #endif