This change takes out responsibility for packetization from the RtpRtcp class, and deletes the method RtpRtcp::SendOutgoingData. Video packetization was similarly moved in cl https://webrtc-review.googlesource.com/c/src/+/123187 Bug: webrtc:7135 Change-Id: I0953125a5ca22a2ce51761b83693e0bb8ea74cd8 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/125721 Commit-Queue: Niels Moller <nisse@webrtc.org> Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org> Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27000}