Clean up unnecessary PassRefPtr.h include in modules

Source/modules/filesystem/DirectoryReaderBase.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 15 matching lines @@
  * 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 DirectoryReaderBase_h
 #define DirectoryReaderBase_h
 
 #include "modules/filesystem/DOMFileSystemBase.h"
 #include "platform/heap/Handle.h"
-#include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class DirectoryReaderBase : public RefCountedWillBeGarbageCollectedFinalized<DirectoryReaderBase> {
 public:
     DOMFileSystemBase* filesystem() const { return m_fileSystem.get(); }
     void setHasMoreEntries(bool hasMoreEntries) { m_hasMoreEntries = hasMoreEntries; }
 
@@ skipping 16 matching lines @@
 
     // This is a virtual path.
     String m_fullPath;
 
     bool m_hasMoreEntries;
 };
 
 } // namespace WebCore
 
 #endif // DirectoryReaderBase_h