Rename RTCOutboundRTPStreamStats *_rtt members to *_round_trip_time.

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 116 matching lines @@
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/633550
   RTCStatsMember<bool> nominated;
   // TODO(hbos): Collected by |RTCStatsCollector| but different than the spec.
   // crbug.com/633550
   RTCStatsMember<bool> writable;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/633550
   RTCStatsMember<bool> readable;
   RTCStatsMember<uint64_t> bytes_sent;
   RTCStatsMember<uint64_t> bytes_received;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/633550
-  RTCStatsMember<double> total_rtt;
+  RTCStatsMember<double> total_round_trip_time;
   // TODO(hbos): Collected by |RTCStatsCollector| but different than the spec.
   // crbug.com/633550
-  RTCStatsMember<double> current_rtt;
+  RTCStatsMember<double> current_round_trip_time;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/633550
   RTCStatsMember<double> available_outgoing_bitrate;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/633550
   RTCStatsMember<double> available_incoming_bitrate;
   RTCStatsMember<uint64_t> requests_received;
   RTCStatsMember<uint64_t> requests_sent;
   RTCStatsMember<uint64_t> responses_received;
   RTCStatsMember<uint64_t> responses_sent;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/633550
   RTCStatsMember<uint64_t> retransmissions_received;
@@ skipping 237 matching lines @@
   RTCStatsMember<std::string> rtcp_transport_stats_id;
   RTCStatsMember<bool> active_connection;
   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_