Implement framesDecoded stat in video receive ssrc stats.

webrtc/api/statscollector.cc

 /*
  *  Copyright 2012 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 210 matching lines @@
     { StatsReport::kStatsValueNameJitterBufferMs, info.jitter_buffer_ms },
     { StatsReport::kStatsValueNameMaxDecodeMs, info.max_decode_ms },
     { StatsReport::kStatsValueNameMinPlayoutDelayMs,
       info.min_playout_delay_ms },
     { StatsReport::kStatsValueNameNacksSent, info.nacks_sent },
     { StatsReport::kStatsValueNamePacketsLost, info.packets_lost },
     { StatsReport::kStatsValueNamePacketsReceived, info.packets_rcvd },
     { StatsReport::kStatsValueNamePlisSent, info.plis_sent },
     { StatsReport::kStatsValueNameRenderDelayMs, info.render_delay_ms },
     { StatsReport::kStatsValueNameTargetDelayMs, info.target_delay_ms },
+    { StatsReport::kStatsValueNameFramesDecoded, info.frames_decoded },
   };
 
   for (const auto& i : ints)
     report->AddInt(i.name, i.value);
   report->AddString(StatsReport::kStatsValueNameMediaType, "video");
 }
 
 void ExtractStats(const cricket::VideoSenderInfo& info, StatsReport* report) {
   ExtractCommonSendProperties(info, report);
 
@@ skipping 724 matching lines @@
     StatsReport* report = entry.second;
     report->set_timestamp(stats_gathering_started_);
   }
 }
 
 void StatsCollector::ClearUpdateStatsCacheForTest() {
   stats_gathering_started_ = 0;
 }
 
 }  // namespace webrtc