- "WebRTC.Video.SendDelayInMs" Change so that PacketOption packet id is always set in RtpSender (if having a TransportSequenceNumberAllocator). Add SendDelayStats class for computing delays. Add SendPacketObserver to RtpRtcp config and register SendDelayStats as observer. Wire up OnSentPacket to SendDelayStats. BUG=webrtc:5215 Review-Url: https://codereview.webrtc.org/1478253002 Cr-Commit-Position: refs/heads/master@{#12600}