It holds the same information as codecType, but in different format. Bug: webrtc:8830 Change-Id: Ia83e2dff4fd9a5ddb489501b7a1fe80759fa4218 Reviewed-on: https://webrtc-review.googlesource.com/56100 Reviewed-by: Erik Språng <sprang@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22307}