Make filesystem objects ScriptWrappable.

Source/modules/filesystem/DirectoryReaderSync.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 26 matching lines @@
 #include "modules/filesystem/EntryArraySync.h"
 #include "modules/filesystem/EntrySync.h"
 #include "modules/filesystem/FileEntrySync.h"
 #include "modules/filesystem/SyncCallbackHelper.h"
 
 namespace WebCore {
 
 DirectoryReaderSync::DirectoryReaderSync(PassRefPtr<DOMFileSystemBase> fileSystem, const String& fullPath)
     : DirectoryReaderBase(fileSystem, fullPath)
 {
+    ScriptWrappable::init(this);
 }
 
 PassRefPtr<EntryArraySync> DirectoryReaderSync::readEntries(ExceptionCode& ec)
 {
     ec = 0;
     if (!m_hasMoreEntries)
         return EntryArraySync::create();
 
     EntriesSyncCallbackHelper helper(m_fileSystem->asyncFileSystem());
     if (!m_fileSystem->readDirectory(this, m_fullPath, helper.successCallback(), helper.errorCallback())) {
         ec = FileException::INVALID_MODIFICATION_ERR;
         setHasMoreEntries(false);
         return 0;
     }
     return helper.getResult(ec);
 }
 
 } // namespace