Movable support for VideoReceiveStream::Config and avoid copies

webrtc/call/bitrate_estimator_tests.cc

Index: webrtc/call/bitrate_estimator_tests.cc
diff --git a/webrtc/call/bitrate_estimator_tests.cc b/webrtc/call/bitrate_estimator_tests.cc
index 8cd2799ba2d436895efe4c9162200e088b72764c..17ddb747c7e10d333e9277cb30c284d0d5d402a2 100644
--- a/webrtc/call/bitrate_estimator_tests.cc
+++ b/webrtc/call/bitrate_estimator_tests.cc
@@ -205,7 +205,7 @@ class BitrateEstimatorTest : public test::CallTest {
             test_->video_send_config_.rtp.ssrcs[0];
         test_->receive_config_.rtp.local_ssrc++;
         video_receive_stream_ = test_->receiver_call_->CreateVideoReceiveStream(
-            test_->receive_config_);
+            test_->receive_config_.Copy());
         video_receive_stream_->Start();
       }
       is_sending_receiving_ = true;