The name media_send_ssrc makes less sense when used mostly for the RtcpReceiver functionality. The old member is still there and used as a fallback. That will be cleaned away after downstream code is fixed. Bug: webrtc:10774 Change-Id: I4ec18db76910f31dfe76bc9b137ffe89220d3fa8 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/149836 Reviewed-by: Sebastian Jansson <srte@webrtc.org> Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org> Commit-Queue: Erik Språng <sprang@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28923}