virtual void Decode(const scoped_refptr<DecoderBuffer>& buffer,
const DecodeCB& decode_cb) OVERRIDE;
virtual void Reset(const base::Closure& closure) OVERRIDE;
virtual void Decode(const scoped_refptr<DecoderBuffer>& buffer,
const DecodeCB& decode_cb) OVERRIDE;
virtual void Reset(const base::Closure& closure) OVERRIDE;