Clean up unnecessary PassRefPtr.h include in modules

Source/modules/filesystem/DirectoryReader.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 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef DirectoryReader_h
 #define DirectoryReader_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "modules/filesystem/DOMFileSystem.h"
 #include "modules/filesystem/DirectoryReaderBase.h"
 #include "platform/heap/Handle.h"
-#include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class EntriesCallback;
 class EntriesCallbacks;
 class ErrorCallback;
 
 class DirectoryReader : public DirectoryReaderBase, public ScriptWrappable {
@@ skipping 24 matching lines @@
     bool m_isReading;
     WillBeHeapVector<RefPtrWillBeMember<Entry> > m_entries;
     RefPtrWillBeMember<FileError> m_error;
     OwnPtr<EntriesCallback> m_entriesCallback;
     OwnPtr<ErrorCallback> m_errorCallback;
 };
 
 }
 
 #endif // DirectoryReader_h