This method sends arbitrary number rtp::RcpPackets into one or more IP packets. It is implemented both in RtcpTranceiver and in RtpRtcp. Change-Id: I00424ee2f1730ff98626f768846f4ac1ad864933 BUG: webrtc:10742 Change-Id: I00424ee2f1730ff98626f768846f4ac1ad864933 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/156240 Commit-Queue: Per Kjellander <perkj@webrtc.org> Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29430}