Alessio Bazzica 048adc7136 Add missing remote-outbound stats to RTCPReceiver::NTP
In order to add `RTCRemoteOutboundRtpStreamStats` (see [1]), the
following stats must be added:
- sender's packet count (see [2])
- sender's octet count (see [2])
- total number of RTCP SR blocks sent (see [3])

[1] https://www.w3.org/TR/webrtc-stats/#dom-rtcremoteoutboundrtpstreamstats
[2] https://tools.ietf.org/html/rfc3550#section-6.4.1
[3] https://www.w3.org/TR/webrtc-stats/#dom-rtcremoteoutboundrtpstreamstats-reportssent

Bug: webrtc:12529
Change-Id: I47ac2f79ba53631965d1cd7c1062f3d0f158d66e
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/210963
Commit-Queue: Alessio Bazzica <alessiob@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33423}
2021-03-10 16:36:48 +00:00
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