Reland of Add framerate to VideoSinkWants and ability to signal on overuse

webrtc/test/call_test.cc

Index: webrtc/test/call_test.cc
diff --git a/webrtc/test/call_test.cc b/webrtc/test/call_test.cc
index d8297d58127a67da909235d326b948ee7bd6908b..023ff1acf2d6a4aa05ed43bc16670c985bbf8df0 100644
--- a/webrtc/test/call_test.cc
+++ b/webrtc/test/call_test.cc
@@ -326,7 +326,7 @@ void CallTest::CreateFrameGeneratorCapturerWithDrift(Clock* clock,
       width, height, framerate * speed, clock));
   video_send_stream_->SetSource(
       frame_generator_capturer_.get(),
-      VideoSendStream::DegradationPreference::kBalanced);
+      VideoSendStream::DegradationPreference::kMaintainFramerate);
 }
 
 void CallTest::CreateFrameGeneratorCapturer(int framerate,
@@ -336,7 +336,7 @@ void CallTest::CreateFrameGeneratorCapturer(int framerate,
       test::FrameGeneratorCapturer::Create(width, height, framerate, clock_));
   video_send_stream_->SetSource(
       frame_generator_capturer_.get(),
-      VideoSendStream::DegradationPreference::kBalanced);
+      VideoSendStream::DegradationPreference::kMaintainFramerate);
 }
 
 void CallTest::CreateFakeAudioDevices(