Read the number of TLs for VP9 too + cleanup

webrtc/video/video_quality_test.h

Index: webrtc/video/video_quality_test.h
diff --git a/webrtc/video/video_quality_test.h b/webrtc/video/video_quality_test.h
index f47140e3e836b116c8708164037c9d4074274d74..b71c1f8b7998da2b4641ea2f2ff3d229e5c6da8c 100644
--- a/webrtc/video/video_quality_test.h
+++ b/webrtc/video/video_quality_test.h
@@ -34,11 +34,12 @@ class VideoQualityTest : public test::CallTest {
       int max_bitrate_bps;
       std::string codec;
       size_t num_temporal_layers;
-
       int min_transmit_bps;
+
       Call::Config::BitrateConfig call_bitrate_config;
       size_t tl_discard_threshold;
       bool send_side_bwe;
+      bool disable_wrapper_frame_dropper;  // Affects only FrameDropper.
     } common;
     struct {  // Video-specific settings.
       std::string clip_name;