RTCMediaStreamTrackStats.framesDropped collected by RTCStatsCollector.

webrtc/api/stats/rtcstats_objects.h

 /*
  *  Copyright 2016 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 250 matching lines @@
   // See |RTCMediaStreamTrackKind| for valid values.
   RTCStatsMember<std::string> kind;
   // Video-only members
   RTCStatsMember<uint32_t> frame_width;
   RTCStatsMember<uint32_t> frame_height;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/659137
   RTCStatsMember<double> frames_per_second;
   RTCStatsMember<uint32_t> frames_sent;
   RTCStatsMember<uint32_t> frames_received;
   RTCStatsMember<uint32_t> frames_decoded;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/659137
   RTCStatsMember<uint32_t> frames_dropped;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/659137
   RTCStatsMember<uint32_t> frames_corrupted;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/659137
   RTCStatsMember<uint32_t> partial_frames_lost;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/659137
   RTCStatsMember<uint32_t> full_frames_lost;
   // Audio-only members
   RTCStatsMember<double> audio_level;
   RTCStatsMember<double> echo_return_loss;
@@ skipping 130 matching lines @@
   // TODO(hbos): Support enum types? "RTCStatsMember<RTCDtlsTransportState>"?
   RTCStatsMember<std::string> dtls_state;
   RTCStatsMember<std::string> selected_candidate_pair_id;
   RTCStatsMember<std::string> local_certificate_id;
   RTCStatsMember<std::string> remote_certificate_id;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_STATS_RTCSTATS_OBJECTS_H_