Add delay metric (includes network delay (rtt/2) + jitter delay + decode time +

webrtc/video/receive_statistics_proxy.h

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 33 matching lines @@
   void OnDecodedFrame();
   void OnRenderedFrame(int width, int height);
   void OnIncomingPayloadType(int payload_type);
   void OnIncomingRate(unsigned int framerate, unsigned int bitrate_bps);
   void OnDecoderTiming(int decode_ms,
                        int max_decode_ms,
                        int current_delay_ms,
                        int target_delay_ms,
                        int jitter_buffer_ms,
                        int min_playout_delay_ms,
-                       int render_delay_ms);
+                       int render_delay_ms,
+                       int64_t rtt_ms);
 
   // Overrides VCMReceiveStatisticsCallback.
   void OnReceiveRatesUpdated(uint32_t bitRate, uint32_t frameRate) override;
   void OnFrameCountsUpdated(const FrameCounts& frame_counts) override;
   void OnDiscardedPacketsUpdated(int discarded_packets) override;
 
   // Overrides RtcpStatisticsCallback.
   void StatisticsUpdated(const webrtc::RtcpStatistics& statistics,
                          uint32_t ssrc) override;
   void CNameChanged(const char* cname, uint32_t ssrc) override;
@@ skipping 22 matching lines @@
   Clock* const clock_;
 
   mutable rtc::CriticalSection crit_;
   VideoReceiveStream::Stats stats_ GUARDED_BY(crit_);
   RateStatistics decode_fps_estimator_ GUARDED_BY(crit_);
   RateStatistics renders_fps_estimator_ GUARDED_BY(crit_);
   rtc::RateTracker render_fps_tracker_ GUARDED_BY(crit_);
   SampleCounter render_width_counter_ GUARDED_BY(crit_);
   SampleCounter render_height_counter_ GUARDED_BY(crit_);
   SampleCounter decode_time_counter_ GUARDED_BY(crit_);
+  SampleCounter delay_counter_ GUARDED_BY(crit_);
   ReportBlockStats report_block_stats_ GUARDED_BY(crit_);
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_VIDEO_RECEIVE_STATISTICS_PROXY_H_