Evan Shrubsole 84afe46549 Don't await adaptation after deg-pref change
Now we only await a previous adaptation if the degradataion
preference is the same as our current degradation preference.
Without this guard we can get stuck as detailed in the attached bug.

Bug: webrtc:11562
Change-Id: I91be48546446ef8d01fe901bc6889201a5b97ba6
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/174805
Commit-Queue: Evan Shrubsole <eshr@google.com>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31236}
2020-05-13 12:14:36 +00:00
..
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