Oilpan: add transition types to FileSystem APIs.

Source/modules/filesystem/FileEntrySync.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 27 matching lines @@
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class ExceptionState;
 class File;
 class FileWriterSync;
 
 class FileEntrySync FINAL : public EntrySync {
 public:
-    static PassRefPtr<FileEntrySync> create(PassRefPtr<DOMFileSystemBase> fileSystem, const String& fullPath)
+    static PassRefPtrWillBeRawPtr<FileEntrySync> create(PassRefPtrWillBeRawPtr<DOMFileSystemBase> fileSystem, const String& fullPath)
     {
-        return adoptRef(new FileEntrySync(fileSystem, fullPath));
+        return adoptRefWillBeNoop(new FileEntrySync(fileSystem, fullPath));
     }
 
     virtual bool isFile() const OVERRIDE { return true; }
 
     PassRefPtrWillBeRawPtr<File> file(ExceptionState&);
-    PassRefPtr<FileWriterSync> createWriter(ExceptionState&);
+    PassRefPtrWillBeRawPtr<FileWriterSync> createWriter(ExceptionState&);
+
+    virtual void trace(Visitor*) OVERRIDE;
 
 private:
-    FileEntrySync(PassRefPtr<DOMFileSystemBase>, const String& fullPath);
+    FileEntrySync(PassRefPtrWillBeRawPtr<DOMFileSystemBase>, const String& fullPath);
 };
 
 DEFINE_TYPE_CASTS(FileEntrySync, EntrySync, entry, entry->isFile(), entry.isFile());
 
 }
 
 #endif // FileEntrySync_h