Replaces payload_name and codec_params. Tbr: srte@webrtc.org Bug: webrtc:9106 Change-Id: Ib45c501c6eb41e92fbb24ab00ada18bf10be42ed Reviewed-on: https://webrtc-review.googlesource.com/98161 Commit-Queue: Niels Moller <nisse@webrtc.org> Reviewed-by: Rasmus Brandt <brandtr@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Reviewed-by: Magnus Jedvert <magjed@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24691}