only enables RFC 2198 redundancy if it has a higher preference
than Opus. This means it not used by default but can be
chosen with setCodecPreferences.
BUG=webrtc:11640
Change-Id: I84ff2ca518da70440297a667dedba5cf4484eed7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/178742
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31830}