Movable support for VideoReceiveStream::Config and avoid copies

webrtc/video/video_receive_stream.h

 /*
  *  Copyright (c) 2013 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 27 matching lines @@
 namespace internal {
 
 class VideoReceiveStream : public webrtc::VideoReceiveStream,
                            public rtc::VideoSinkInterface<VideoFrame>,
                            public EncodedImageCallback,
                            public NackSender,
                            public KeyFrameRequestSender {
  public:
   VideoReceiveStream(int num_cpu_cores,
                      CongestionController* congestion_controller,
-                     const VideoReceiveStream::Config& config,
+                     VideoReceiveStream::Config config,
                      webrtc::VoiceEngine* voice_engine,
                      ProcessThread* process_thread,
                      CallStats* call_stats,
                      VieRemb* remb);
   ~VideoReceiveStream() override;
 
   void SignalNetworkState(NetworkState state);
   bool DeliverRtcp(const uint8_t* packet, size_t length);
   bool DeliverRtp(const uint8_t* packet,
                   size_t length,
@@ skipping 44 matching lines @@
   RtpStreamReceiver rtp_stream_receiver_;
   VideoStreamDecoder video_stream_decoder_;
   ViESyncModule vie_sync_;
 
   std::unique_ptr<IvfFileWriter> ivf_writer_;
 };
 }  // namespace internal
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_VIDEO_RECEIVE_STREAM_H_