Movable support for VideoReceiveStream::Config and avoid copies

webrtc/video/video_receive_stream.cc

Index: webrtc/video/video_receive_stream.cc
diff --git a/webrtc/video/video_receive_stream.cc b/webrtc/video/video_receive_stream.cc
index 770fc96fc30fe2b23509fb1b550e8c8a48ff5f6e..3ad97f5ccd93041cc16b8e2fa0e4ee63c8d31fdb 100644
--- a/webrtc/video/video_receive_stream.cc
+++ b/webrtc/video/video_receive_stream.cc
@@ -147,22 +147,22 @@ namespace internal {
 VideoReceiveStream::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)
     : transport_adapter_(config.rtcp_send_transport),
       encoded_frame_proxy_(config.pre_decode_callback),
-      config_(config),
+      config_(std::move(config)),
       process_thread_(process_thread),
       clock_(Clock::GetRealTimeClock()),
       decode_thread_(DecodeThreadFunction, this, "DecodingThread"),
       congestion_controller_(congestion_controller),
       call_stats_(call_stats),
       video_receiver_(clock_, nullptr, this, this, this),
-      incoming_video_stream_(config.disable_prerenderer_smoothing),
-      stats_proxy_(config_, clock_),
+      incoming_video_stream_(config_.disable_prerenderer_smoothing),
+      stats_proxy_(&config_, clock_),
       rtp_stream_receiver_(&video_receiver_,
                            congestion_controller_->GetRemoteBitrateEstimator(
                                UseSendSideBwe(config_)),
@@ -171,7 +171,7 @@ VideoReceiveStream::VideoReceiveStream(
                            congestion_controller_->pacer(),
                            congestion_controller_->packet_router(),
                            remb,
-                           config,
+                           &config_,
                            &stats_proxy_,
                            process_thread_),
       video_stream_decoder_(&video_receiver_,