Delete unused cricket::VideoFrame methods MakeExclusive and CopyToFrame.

webrtc/media/engine/webrtcvideoframe.h

 /*
  *  Copyright (c) 2011 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.
  */
 
@@ skipping 73 matching lines @@
   void SetTimeStamp(int64_t time_stamp_ns) override {
     time_stamp_ns_ = time_stamp_ns;
   }
 
   webrtc::VideoRotation GetVideoRotation() const override {
     return rotation_;
   }
 
   VideoFrame* Copy() const override;
   bool IsExclusive() const override;
-  bool MakeExclusive() override;
   size_t ConvertToRgbBuffer(uint32_t to_fourcc,
                             uint8_t* buffer,
                             size_t size,
                             int stride_rgb) const override;
 
   const VideoFrame* GetCopyWithRotationApplied() const override;
 
  protected:
   void SetRotation(webrtc::VideoRotation rotation) override {
     rotation_ = rotation;
   }
 
  private:
   VideoFrame* CreateEmptyFrame(int w, int h,
                                int64_t time_stamp_ns) const override;
 
   // An opaque reference counted handle that stores the pixel data.
   rtc::scoped_refptr<webrtc::VideoFrameBuffer> video_frame_buffer_;
   int64_t time_stamp_ns_;
   webrtc::VideoRotation rotation_;
 
   // This is mutable as the calculation is expensive but once calculated, it
   // remains const.
   mutable std::unique_ptr<VideoFrame> rotated_frame_;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_MEDIA_ENGINE_WEBRTCVIDEOFRAME_H_