Oilpan: add transition types to FileSystem APIs.

Source/modules/filesystem/EntryBase.h

 /*
  * 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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef EntryBase_h
 #define EntryBase_h
 
+#include "heap/Handle.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class DOMFileSystemBase;
 class EntrySync;
 
 // A common base class for Entry and EntrySync.
-class EntryBase : public RefCounted<EntryBase> {
+class EntryBase : public RefCountedWillBeGarbageCollectedFinalized<EntryBase> {
 public:
     virtual ~EntryBase();
 
     DOMFileSystemBase* filesystem() const { return m_fileSystem.get(); }
 
     virtual bool isFile() const { return false; }
     virtual bool isDirectory() const { return false; }
 
     const String& fullPath() const { return m_fullPath; }
     const String& name() const { return m_name; }
 
     String toURL() const;
 
+    virtual void trace(Visitor*);
+
 protected:
-    EntryBase(PassRefPtr<DOMFileSystemBase>, const String& fullPath);
+    EntryBase(PassRefPtrWillBeRawPtr<DOMFileSystemBase>, const String& fullPath);
     friend class EntrySync;
 
-    RefPtr<DOMFileSystemBase> m_fileSystem;
+    RefPtrWillBeMember<DOMFileSystemBase> m_fileSystem;
 
     // This is a virtual path.
     String m_fullPath;
 
     String m_name;
 };
 
 }
 
 #endif // EntryBase_h