Let ViEEncoder express resolution requests as Sinkwants

webrtc/video/video_quality_test.cc

Index: webrtc/video/video_quality_test.cc
diff --git a/webrtc/video/video_quality_test.cc b/webrtc/video/video_quality_test.cc
index d81bc897af5e834f44327d9bebc2cc05ae7827e3..655362a490a4d4d44b11ba78edaf639fa4d5869d 100644
--- a/webrtc/video/video_quality_test.cc
+++ b/webrtc/video/video_quality_test.cc
@@ -1217,7 +1217,9 @@ void VideoQualityTest::RunWithAnalyzer(const Params& params) {
 
   CreateVideoStreams();
   analyzer.SetSendStream(video_send_stream_);
-  video_send_stream_->SetSource(analyzer.OutputInterface());
+  video_send_stream_->SetSource(
+      analyzer.OutputInterface(),
+      VideoSendStream::DegradationPreference::kBalanced);
 
   CreateCapturer();
   rtc::VideoSinkWants wants;
@@ -1317,7 +1319,8 @@ void VideoQualityTest::RunWithRenderers(const Params& params) {
   VideoReceiveStream* video_receive_stream =
       call->CreateVideoReceiveStream(video_receive_configs_[stream_id].Copy());
   CreateCapturer();
-  video_send_stream_->SetSource(capturer_.get());
+  video_send_stream_->SetSource(
+      capturer_.get(), VideoSendStream::DegradationPreference::kBalanced);
 
   AudioReceiveStream* audio_receive_stream = nullptr;
   if (params_.audio.enabled) {