Report timing frames info in GetStats.

webrtc/media/engine/webrtcvideoengine.cc

Index: webrtc/media/engine/webrtcvideoengine.cc
diff --git a/webrtc/media/engine/webrtcvideoengine.cc b/webrtc/media/engine/webrtcvideoengine.cc
index e592740bb9260b3c6594514930a1793dca4c96af..2eab3ceaa78bd5606148cdc691baf300ce3ec503 100644
--- a/webrtc/media/engine/webrtcvideoengine.cc
+++ b/webrtc/media/engine/webrtcvideoengine.cc
@@ -2483,6 +2483,8 @@ WebRtcVideoChannel::WebRtcVideoReceiveStream::GetVideoReceiverInfo(
   info.plis_sent = stats.rtcp_packet_type_counts.pli_packets;
   info.nacks_sent = stats.rtcp_packet_type_counts.nack_packets;
 
+  info.timing_frame_info = stream_->GetAndResetTimingFrameInfo();
+
   if (log_stats)
     LOG(LS_INFO) << stats.ToString(rtc::TimeMillis());