Oilpan: Prepare to support garbage-collected Node in WebNode hierarchy.

Source/web/WebDocumentType.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 
 using namespace WebCore;
 
 namespace blink {
 
 WebString WebDocumentType::name() const
 {
     return WebString(constUnwrap<DocumentType>()->name());
 }
 
-WebDocumentType::WebDocumentType(const PassRefPtr<DocumentType>& elem)
+WebDocumentType::WebDocumentType(const PassRefPtrWillBeRawPtr<DocumentType>& elem)
     : WebNode(elem)
 {
 }
 
-WebDocumentType& WebDocumentType::operator=(const PassRefPtr<DocumentType>& elem)
+WebDocumentType& WebDocumentType::operator=(const PassRefPtrWillBeRawPtr<DocumentType>& elem)
 {
     m_private = elem;
     return *this;
 }
 
-WebDocumentType::operator PassRefPtr<DocumentType>() const
+WebDocumentType::operator PassRefPtrWillBeRawPtr<DocumentType>() const
 {
     return toDocumentType(m_private.get());
 }
 
 } // namespace blink