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

public/web/WebNode.h

 /*
  * Copyright (C) 2009 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 123 matching lines @@
     }
 
     template<typename T> const T toConst() const
     {
         T res;
         res.WebNode::assign(*this);
         return res;
     }
 
 #if BLINK_IMPLEMENTATION
-    WebNode(const WTF::PassRefPtr<WebCore::Node>&);
-    WebNode& operator=(const WTF::PassRefPtr<WebCore::Node>&);
-    operator WTF::PassRefPtr<WebCore::Node>() const;
+    WebNode(const PassRefPtrWillBeRawPtr<WebCore::Node>&);
+    WebNode& operator=(const PassRefPtrWillBeRawPtr<WebCore::Node>&);
+    operator PassRefPtrWillBeRawPtr<WebCore::Node>() const;
 #endif
 
 #if BLINK_IMPLEMENTATION
     template<typename T> T* unwrap()
     {
         return static_cast<T*>(m_private.get());
     }
 
     template<typename T> const T* constUnwrap() const
     {
@@ skipping 16 matching lines @@
 }
 
 inline bool operator<(const WebNode& a, const WebNode& b)
 {
     return a.lessThan(b);
 }
 
 } // namespace blink
 
 #endif