Report timing frames info in GetStats.

webrtc/modules/video_coding/timing.h

Index: webrtc/modules/video_coding/timing.h
diff --git a/webrtc/modules/video_coding/timing.h b/webrtc/modules/video_coding/timing.h
index bfd6778c123c5bfb7ea2750f4f1cd89e756ed531..82252bf3fe0f3e8756ddaf419b2ba21b3a616efd 100644
--- a/webrtc/modules/video_coding/timing.h
+++ b/webrtc/modules/video_coding/timing.h
@@ -102,6 +102,9 @@ class VCMTiming {
                           int* min_playout_delay_ms,
                           int* render_delay_ms) const;
 
+  void SetTimingFrameInfo(const TimingFrameInfo& info);
+  rtc::Optional<TimingFrameInfo> GetTimingFrameInfo();
+
   enum { kDefaultRenderDelayMs = 10 };
   enum { kDelayMaxChangeMsPerS = 100 };
 
@@ -131,6 +134,7 @@ class VCMTiming {
   int current_delay_ms_ GUARDED_BY(crit_sect_);
   int last_decode_ms_ GUARDED_BY(crit_sect_);
   uint32_t prev_frame_timestamp_ GUARDED_BY(crit_sect_);
+  rtc::Optional<TimingFrameInfo> timing_frame_info_ GUARDED_BY(crit_sect_);
 
   // Statistics.
   size_t num_decoded_frames_ GUARDED_BY(crit_sect_);