Oilpan: add transition types to FileSystem APIs.

Source/modules/filesystem/Metadata.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 14 matching lines @@
  * 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 Metadata_h
 #define Metadata_h
 
 #include "bindings/v8/ScriptWrappable.h"
+#include "heap/Handle.h"
 #include "platform/FileMetadata.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
-class Metadata : public RefCounted<Metadata>, public ScriptWrappable {
+class Metadata : public RefCountedWillBeGarbageCollectedFinalized<Metadata>, public ScriptWrappable {
 public:
-    static PassRefPtr<Metadata> create(const FileMetadata& platformMetadata)
+    static PassRefPtrWillBeRawPtr<Metadata> create(const FileMetadata& platformMetadata)
     {
-        return adoptRef(new Metadata(platformMetadata));
+        return adoptRefWillBeNoop(new Metadata(platformMetadata));
     }
 
-    static PassRefPtr<Metadata> create(Metadata* metadata)
+    static PassRefPtrWillBeRawPtr<Metadata> create(Metadata* metadata)
     {
-        return adoptRef(new Metadata(metadata->m_platformMetadata));
+        return adoptRefWillBeNoop(new Metadata(metadata->m_platformMetadata));
     }
 
     // Needs to return epoch time in milliseconds for Date while FileMetadata's modificationTime is in seconds.
     double modificationTime() const { return m_platformMetadata.modificationTime * 1000.0; }
     unsigned long long size() const { return static_cast<unsigned long long>(m_platformMetadata.length); }
 
+    void trace(Visitor*) { }
+
 private:
     explicit Metadata(const FileMetadata& platformMetadata)
         : m_platformMetadata(platformMetadata)
     {
         ScriptWrappable::init(this);
     }
 
     FileMetadata m_platformMetadata;
 };
 
 } // namespace
 
 #endif // Metadata_h