Use RtxReceiveStream.

webrtc/video/video_receive_stream.h

Index: webrtc/video/video_receive_stream.h
diff --git a/webrtc/video/video_receive_stream.h b/webrtc/video/video_receive_stream.h
index ba340ea4192d969a4d636bf995c02266f883a876..967efccd3aadaf2dfb01eac3eb4a2e662ea3861a 100644
--- a/webrtc/video/video_receive_stream.h
+++ b/webrtc/video/video_receive_stream.h
@@ -38,6 +38,7 @@ class ProcessThread;
 class RTPFragmentationHeader;
 class RtpStreamReceiverInterface;
 class RtpStreamReceiverControllerInterface;
+class RtxReceiveStream;
 class VCMTiming;
 class VCMJitterEstimator;
 
@@ -143,6 +144,7 @@ class VideoReceiveStream : public webrtc::VideoReceiveStream,
   std::unique_ptr<video_coding::FrameBuffer> frame_buffer_;
 
   std::unique_ptr<RtpStreamReceiverInterface> media_receiver_;
+  std::unique_ptr<RtxReceiveStream> rtx_receive_stream_;
   std::unique_ptr<RtpStreamReceiverInterface> rtx_receiver_;
 
   // Whenever we are in an undecodable state (stream has just started or due to