Revert of RTCInboundRTPStreamStats.qpSum collected.

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 305 matching lines @@
   RTCStatsMember<std::string> codec_id;
   // FIR and PLI counts are only defined for |media_type == "video"|.
   RTCStatsMember<uint32_t> fir_count;
   RTCStatsMember<uint32_t> pli_count;
   // TODO(hbos): NACK count should be collected by |RTCStatsCollector| for both
   // audio and video but is only defined in the "video" case. crbug.com/657856
   RTCStatsMember<uint32_t> nack_count;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/657854
   // SLI count is only defined for |media_type == "video"|.
   RTCStatsMember<uint32_t> sli_count;
+  // TODO(hbos): Only collected for the outbound case, should also be collected
+  // for inbound case by |RTCStatsCollector|. crbug.com/657854, crbug.com/657855
   RTCStatsMember<uint64_t> qp_sum;
 
  protected:
   RTCRTPStreamStats(const std::string& id, int64_t timestamp_us);
   RTCRTPStreamStats(std::string&& id, int64_t timestamp_us);
 };
 
 // https://w3c.github.io/webrtc-stats/#inboundrtpstats-dict*
 // Tracking bug crbug.com/657855
 // TODO(hbos): Support the remote case |is_remote = true|. crbug.com/657855
@@ skipping 72 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_