Oilpan: add transition types to FileSystem APIs.

Source/modules/filesystem/DOMFileSystemBase.cpp

 /*
  * 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 302 matching lines @@
 
     OwnPtr<AsyncFileSystemCallbacks> callbacks(EntryCallbacks::create(successCallback, errorCallback, this, absolutePath, true));
     callbacks->setShouldBlockUntilCompletion(synchronousType == Synchronous);
 
     if (flags.create)
         fileSystem()->createDirectory(createFileSystemURL(absolutePath), flags.exclusive, callbacks.release());
     else
         fileSystem()->directoryExists(createFileSystemURL(absolutePath), callbacks.release());
 }
 
-int DOMFileSystemBase::readDirectory(PassRefPtr<DirectoryReaderBase> reader, const String& path, PassOwnPtr<EntriesCallback> successCallback, PassOwnPtr<ErrorCallback> errorCallback, SynchronousType synchronousType)
+bool DOMFileSystemBase::readDirectory(PassRefPtrWillBeRawPtr<DirectoryReaderBase> reader, const String& path, PassOwnPtr<EntriesCallback> successCallback, PassOwnPtr<ErrorCallback> errorCallback, SynchronousType synchronousType)
 {
     ASSERT(DOMFilePath::isAbsolute(path));
 
     OwnPtr<AsyncFileSystemCallbacks> callbacks(EntriesCallbacks::create(successCallback, errorCallback, reader, path));
     callbacks->setShouldBlockUntilCompletion(synchronousType == Synchronous);
 
     return fileSystem()->readDirectory(createFileSystemURL(path), callbacks.release());
 }
 
 bool DOMFileSystemBase::waitForAdditionalResult(int callbacksId)
 {
     return fileSystem()->waitForAdditionalResult(callbacksId);
 }
 
 } // namespace WebCore