Oilpan: add transition types to FileSystem APIs.

Source/modules/filesystem/FileEntry.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 FileEntry_h
 #define FileEntry_h
 
+#include "heap/Handle.h"
 #include "modules/filesystem/Entry.h"
 
 namespace WebCore {
 
 class DOMFileSystemBase;
 class FileCallback;
 class FileWriterCallback;
 
 class FileEntry FINAL : public Entry {
 public:
-    static PassRefPtr<FileEntry> create(PassRefPtr<DOMFileSystemBase> fileSystem, const String& fullPath)
+    static PassRefPtrWillBeRawPtr<FileEntry> create(PassRefPtrWillBeRawPtr<DOMFileSystemBase> fileSystem, const String& fullPath)
     {
-        return adoptRef(new FileEntry(fileSystem, fullPath));
+        return adoptRefWillBeNoop(new FileEntry(fileSystem, fullPath));
     }
 
     void createWriter(PassOwnPtr<FileWriterCallback>, PassOwnPtr<ErrorCallback> = nullptr);
     void file(PassOwnPtr<FileCallback>, PassOwnPtr<ErrorCallback> = nullptr);
 
     virtual bool isFile() const OVERRIDE { return true; }
 
+    virtual void trace(Visitor*) OVERRIDE;
+
 private:
-    FileEntry(PassRefPtr<DOMFileSystemBase>, const String& fullPath);
+    FileEntry(PassRefPtrWillBeRawPtr<DOMFileSystemBase>, const String& fullPath);
 };
 
 DEFINE_TYPE_CASTS(FileEntry, Entry, entry, entry->isFile(), entry.isFile());
 
 } // namespace
 
 #endif // FileEntry_h