Remove dead code in vp8_impl files.

webrtc/modules/video_coding/codecs/vp8/vp8_impl.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  *
  * WEBRTC VP8 wrapper interface
@@ skipping 74 matching lines @@
                              bool only_predicting_from_key_frame);
 
   int GetEncodedPartitions(const VideoFrame& input_image,
                            bool only_predicting_from_key_frame);
 
   // Set the stream state for stream |stream_idx|.
   void SetStreamState(bool send_stream, int stream_idx);
 
   uint32_t MaxIntraTarget(uint32_t optimal_buffer_size);
 
+  const bool use_gf_boost_;
+
   EncodedImageCallback* encoded_complete_callback_;
   VideoCodec codec_;
   bool inited_;
   int64_t timestamp_;
   int qp_max_;
   int cpu_speed_default_;
   int number_of_cores_;
   uint32_t rc_max_intra_target_;
-  int token_partitions_;
   std::vector<TemporalLayers*> temporal_layers_;
-  bool down_scale_requested_;
-  uint32_t down_scale_bitrate_;
-  const bool use_gf_boost_;
   std::vector<uint16_t> picture_id_;
   std::vector<int> last_key_frame_picture_id_;
   std::vector<bool> key_frame_request_;
   std::vector<bool> send_stream_;
   std::vector<int> cpu_speed_;
   std::vector<vpx_image_t> raw_images_;
   std::vector<EncodedImage> encoded_images_;
   std::vector<vpx_codec_ctx_t> encoders_;
   std::vector<vpx_codec_enc_cfg_t> configurations_;
   std::vector<vpx_rational_t> downsampling_factors_;
-};  // end of VP8EncoderImpl class
+};
 
 class VP8DecoderImpl : public VP8Decoder {
  public:
   VP8DecoderImpl();
 
   virtual ~VP8DecoderImpl();
 
   int InitDecode(const VideoCodec* inst, int number_of_cores) override;
 
   int Decode(const EncodedImage& input_image,
              bool missing_frames,
              const RTPFragmentationHeader* fragmentation,
              const CodecSpecificInfo* codec_specific_info,
              int64_t /*render_time_ms*/) override;
 
   int RegisterDecodeCompleteCallback(DecodedImageCallback* callback) override;
   int Release() override;
 
   const char* ImplementationName() const override;
 
  private:
-  // Copy reference image from this _decoder to the _decoder in copyTo. Set
-  // which frame type to copy in _refFrame->frame_type before the call to
-  // this function.
-  int CopyReference(VP8DecoderImpl* copy);
-
-  int DecodePartitions(const EncodedImage& input_image,
-                       const RTPFragmentationHeader* fragmentation);
-
   int ReturnFrame(const vpx_image_t* img,
                   uint32_t timeStamp,
                   int64_t ntp_time_ms,
                   int qp);
 
+  const bool use_postproc_arm_;
+
   I420BufferPool buffer_pool_;
   DecodedImageCallback* decode_complete_callback_;
   bool inited_;
   vpx_codec_ctx_t* decoder_;
-  VideoCodec codec_;
-  int image_format_;
-  vpx_ref_frame_t* ref_frame_;
   int propagation_cnt_;
   int last_frame_width_;
   int last_frame_height_;
   bool key_frame_required_;
-  const bool use_postproc_arm_;
-};  // end of VP8DecoderImpl class
+};
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_CODECS_VP8_VP8_IMPL_H_