Revert of Move encoding module to oilpan

Source/modules/encoding/TextDecoder.h

 /*
  * Copyright (C) 2013 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 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * 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 TextDecoder_h
 #define TextDecoder_h
 
 #include "bindings/v8/Dictionary.h"
-#include "heap/Handle.h"
 #include "wtf/ArrayBufferView.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/TextCodec.h"
 #include "wtf/text/TextEncoding.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class ExceptionState;
 
-class TextDecoder FINAL : public RefCountedWillBeGarbageCollectedFinalized<TextDecoder> {
-    DECLARE_GC_INFO;
+class TextDecoder FINAL : public RefCounted<TextDecoder> {
 public:
-    static PassRefPtrWillBeRawPtr<TextDecoder> create(const String& label, const Dictionary&, ExceptionState&);
+    static PassRefPtr<TextDecoder> create(const String& label, const Dictionary&, ExceptionState&);
     ~TextDecoder();
 
     // Implement the IDL
     String encoding() const;
     String decode(ArrayBufferView*, const Dictionary&, ExceptionState&);
     String decode(ExceptionState& exceptionState) { return decode(0, Dictionary(), exceptionState); }
 
-    void trace(Visitor*) { }
+    using RefCounted<TextDecoder>::ref;
+    using RefCounted<TextDecoder>::deref;
 
 private:
     TextDecoder(const String& encoding, bool fatal);
 
     WTF::TextEncoding m_encoding;
     OwnPtr<WTF::TextCodec> m_codec;
     bool m_fatal;
     bool m_bomSeen;
 };
 
 } // namespace WebCore
 
 #endif // TextDecoder_h