Oilpan: add transition types to FileSystem APIs.

Source/modules/filesystem/DOMFileSystemSync.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 @@
 namespace WebCore {
 
 class DirectoryEntrySync;
 class File;
 class FileEntrySync;
 class FileWriterSync;
 class ExceptionState;
 
 class DOMFileSystemSync FINAL : public DOMFileSystemBase, public ScriptWrappable {
 public:
-    static PassRefPtr<DOMFileSystemSync> create(ExecutionContext* context, const String& name, FileSystemType type, const KURL& rootURL)
+    static PassRefPtrWillBeRawPtr<DOMFileSystemSync> create(ExecutionContext* context, const String& name, FileSystemType type, const KURL& rootURL)
     {
-        return adoptRef(new DOMFileSystemSync(context, name, type, rootURL));
+        return adoptRefWillBeRefCountedGarbageCollected(new DOMFileSystemSync(context, name, type, rootURL));
     }
 
-    static PassRefPtr<DOMFileSystemSync> create(DOMFileSystemBase*);
+    static PassRefPtrWillBeRawPtr<DOMFileSystemSync> create(DOMFileSystemBase*);
 
     virtual ~DOMFileSystemSync();
 
     virtual void reportError(PassOwnPtr<ErrorCallback>, PassRefPtrWillBeRawPtr<FileError>) OVERRIDE;
 
-    PassRefPtr<DirectoryEntrySync> root();
+    PassRefPtrWillBeRawPtr<DirectoryEntrySync> root();
 
     PassRefPtrWillBeRawPtr<File> createFile(const FileEntrySync*, ExceptionState&);
-    PassRefPtr<FileWriterSync> createWriter(const FileEntrySync*, ExceptionState&);
+    PassRefPtrWillBeRawPtr<FileWriterSync> createWriter(const FileEntrySync*, ExceptionState&);
 
 private:
     DOMFileSystemSync(ExecutionContext*, const String& name, FileSystemType, const KURL& rootURL);
 };
 
 }
 
 #endif // DOMFileSystemSync_h