Rename RTCOutboundRTPStreamStats *_rtt members to *_round_trip_time.

webrtc/stats/rtcstats_objects.cc

Index: webrtc/stats/rtcstats_objects.cc
diff --git a/webrtc/stats/rtcstats_objects.cc b/webrtc/stats/rtcstats_objects.cc
index 46cf0c38b6c5a6431408c5236eecb4509eb26e0d..73d070e740a3530a7dfb35ec72085b449d3e1902 100644
--- a/webrtc/stats/rtcstats_objects.cc
+++ b/webrtc/stats/rtcstats_objects.cc
@@ -155,8 +155,8 @@ WEBRTC_RTCSTATS_IMPL(RTCIceCandidatePairStats, RTCStats, "candidate-pair",
     &readable,
     &bytes_sent,
     &bytes_received,
-    &total_rtt,
-    &current_rtt,
+    &total_round_trip_time,
+    &current_round_trip_time,
     &available_outgoing_bitrate,
     &available_incoming_bitrate,
     &requests_received,
@@ -188,8 +188,8 @@ RTCIceCandidatePairStats::RTCIceCandidatePairStats(
       readable("readable"),
       bytes_sent("bytesSent"),
       bytes_received("bytesReceived"),
-      total_rtt("totalRtt"),
-      current_rtt("currentRtt"),
+      total_round_trip_time("totalRoundTripTime"),
+      current_round_trip_time("currentRoundTripTime"),
       available_outgoing_bitrate("availableOutgoingBitrate"),
       available_incoming_bitrate("availableIncomingBitrate"),
       requests_received("requestsReceived"),
@@ -217,8 +217,8 @@ RTCIceCandidatePairStats::RTCIceCandidatePairStats(
       readable(other.readable),
       bytes_sent(other.bytes_sent),
       bytes_received(other.bytes_received),
-      total_rtt(other.total_rtt),
-      current_rtt(other.current_rtt),
+      total_round_trip_time(other.total_round_trip_time),
+      current_round_trip_time(other.current_round_trip_time),
       available_outgoing_bitrate(other.available_outgoing_bitrate),
       available_incoming_bitrate(other.available_incoming_bitrate),
       requests_received(other.requests_received),