Evan Shrubsole 2e2f67443e Add VideoStreamEncoder tests for DegredationPreference switching.
This test ensures that when changing degradation preference,
a resource that was previously downgraded in a different degradation
preference can not adapt up.

Bug: webrtc:11522, webrtc:11523
Change-Id: Id362530408db4c49b0d0b2516be9a11ccc7c8f37
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/175012
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Evan Shrubsole <eshr@google.com>
Cr-Commit-Position: refs/heads/master@{#31250}
2020-05-14 09:21:32 +00:00
..
2020-05-11 12:20:09 +00:00
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