Add framerate to VideoSinkWants and ability to signal on overuse

webrtc/media/base/videobroadcaster_unittest.cc

Index: webrtc/media/base/videobroadcaster_unittest.cc
diff --git a/webrtc/media/base/videobroadcaster_unittest.cc b/webrtc/media/base/videobroadcaster_unittest.cc
index 5274868204589856369a9a1a46a9b41c68c37b7c..43d681fafaebc7e9327f57f3ac911d7f56fcca18 100644
--- a/webrtc/media/base/videobroadcaster_unittest.cc
+++ b/webrtc/media/base/videobroadcaster_unittest.cc
@@ -127,6 +127,27 @@ TEST(VideoBroadcasterTest, AppliesMinOfSinkWantsMaxAndTargetPixelCount) {
   EXPECT_EQ(1280 * 720, *broadcaster.wants().target_pixel_count);
 }
 
+TEST(VideoBroadcasterTest, AppliesMinOfSinkWantsMaxFramerate) {
+  VideoBroadcaster broadcaster;
+  EXPECT_FALSE(broadcaster.wants().max_framerate_fps);
+
+  FakeVideoRenderer sink1;
+  VideoSinkWants wants1;
+  wants1.max_framerate_fps.emplace(30);
+
+  broadcaster.AddOrUpdateSink(&sink1, wants1);
+  EXPECT_EQ(30, *broadcaster.wants().max_framerate_fps);
+
+  FakeVideoRenderer sink2;
+  VideoSinkWants wants2;
+  wants2.max_framerate_fps.emplace(15);
+  broadcaster.AddOrUpdateSink(&sink2, wants2);
+  EXPECT_EQ(15, *broadcaster.wants().max_framerate_fps);
+
+  broadcaster.RemoveSink(&sink2);
+  EXPECT_EQ(30, *broadcaster.wants().max_framerate_fps);
+}
+
 TEST(VideoBroadcasterTest, SinkWantsBlackFrames) {
   VideoBroadcaster broadcaster;
   EXPECT_TRUE(!broadcaster.wants().black_frames);