Report timing frames info in GetStats.

webrtc/video/receive_statistics_proxy.h

Index: webrtc/video/receive_statistics_proxy.h
diff --git a/webrtc/video/receive_statistics_proxy.h b/webrtc/video/receive_statistics_proxy.h
index e1d097152e8d9bcd277d0226b8adc1d4bab7b717..96af9f1eb7426fc2ade3e4c29bca7e578a428a17 100644
--- a/webrtc/video/receive_statistics_proxy.h
+++ b/webrtc/video/receive_statistics_proxy.h
@@ -68,6 +68,7 @@ class ReceiveStatisticsProxy : public VCMReceiveStatisticsCallback,
                                    int jitter_buffer_ms,
                                    int min_playout_delay_ms,
                                    int render_delay_ms) override;
+  void OnTimingFrameInfoUpdated(const TimingFrameInfo& info) override;
 
   // Overrides RtcpStatisticsCallback.
   void StatisticsUpdated(const webrtc::RtcpStatistics& statistics,
@@ -152,6 +153,7 @@ class ReceiveStatisticsProxy : public VCMReceiveStatisticsCallback,
   int64_t avg_rtt_ms_ GUARDED_BY(crit_);
   mutable std::map<int64_t, size_t> frame_window_ GUARDED_BY(&crit_);
   VideoContentType last_content_type_ GUARDED_BY(&crit_);
+  mutable TimingFrameInfo timing_frame_info_ GUARDED_BY(&crit_);
 };
 
 }  // namespace webrtc