Move RTCOutboundRTPStreamStats.roundTripTime to inbound, don't collect.

The value is being moved:
https://github.com/w3c/webrtc-stats/pull/167

Stop collecting this value. Our previous value was incorrect, our RTT
value was a smoothed value based on STUN pings but the spec says it
should be based on RTCP timestamps in RTCP Receiver Report (RR) on
inbound streams with isRemote=true (not supported).

Updated some bug references.

BUG=webrtc:7065, webrtc:7066

Review-Url: https://codereview.webrtc.org/2722633005
Cr-Commit-Position: refs/heads/master@{#16931}
diff --git a/webrtc/api/stats/rtcstats_objects.h b/webrtc/api/stats/rtcstats_objects.h
index cc01b5e..49135f8 100644
--- a/webrtc/api/stats/rtcstats_objects.h
+++ b/webrtc/api/stats/rtcstats_objects.h
@@ -327,8 +327,8 @@
 };
 
 // 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
+// TODO(hbos): Support the remote case |is_remote = true|.
+// https://bugs.webrtc.org/7065
 class RTCInboundRTPStreamStats final : public RTCRTPStreamStats {
  public:
   WEBRTC_RTCSTATS_DECL();
@@ -341,36 +341,38 @@
   RTCStatsMember<uint32_t> packets_received;
   RTCStatsMember<uint64_t> bytes_received;
   RTCStatsMember<uint32_t> packets_lost;
-  // TODO(hbos): Not collected in the "video" case by |RTCStatsCollector|.
-  // crbug.com/657855
+  // TODO(hbos): Collect and populate this value for both "audio" and "video",
+  // currently not collected for "video". https://bugs.webrtc.org/7065
   RTCStatsMember<double> jitter;
   RTCStatsMember<double> fraction_lost;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/657855
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7065
+  RTCStatsMember<double> round_trip_time;
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7065
   RTCStatsMember<uint32_t> packets_discarded;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/657855
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7065
   RTCStatsMember<uint32_t> packets_repaired;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/657855
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7065
   RTCStatsMember<uint32_t> burst_packets_lost;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/657855
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7065
   RTCStatsMember<uint32_t> burst_packets_discarded;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/657855
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7065
   RTCStatsMember<uint32_t> burst_loss_count;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/657855
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7065
   RTCStatsMember<uint32_t> burst_discard_count;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/657855
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7065
   RTCStatsMember<double> burst_loss_rate;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/657855
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7065
   RTCStatsMember<double> burst_discard_rate;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/657855
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7065
   RTCStatsMember<double> gap_loss_rate;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/657855
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7065
   RTCStatsMember<double> gap_discard_rate;
   RTCStatsMember<uint32_t> frames_decoded;
 };
 
 // https://w3c.github.io/webrtc-stats/#outboundrtpstats-dict*
-// Tracking bug crbug.com/657856
-// TODO(hbos): Support the remote case |is_remote = true|. crbug.com/657856
+// TODO(hbos): Support the remote case |is_remote = true|.
+// https://bugs.webrtc.org/7066
 class RTCOutboundRTPStreamStats final : public RTCRTPStreamStats {
  public:
   WEBRTC_RTCSTATS_DECL();
@@ -382,9 +384,8 @@
 
   RTCStatsMember<uint32_t> packets_sent;
   RTCStatsMember<uint64_t> bytes_sent;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/657856
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7066
   RTCStatsMember<double> target_bitrate;
-  RTCStatsMember<double> round_trip_time;
   RTCStatsMember<uint32_t> frames_encoded;
 };