In preparation of removing CodecInst. Bug: webrtc:7626 Change-Id: I8955d17dbb3ec15177e505ae420376b542d48410 Reviewed-on: https://webrtc-review.googlesource.com/c/113306 Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Commit-Queue: Fredrik Solenberg <solenberg@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25919}