This reverts commit ba2840ce4eba4adebe7c968adcf7689caedccfa9.
Reason for revert: Looks like this breaks all VP9 tests on the Chromium level, for Mac: https://ci.chromium.org/buildbot/chromium.webrtc/Mac%20Tester/85866
Search for TIMED OUT in for instance https://logs.chromium.org/logs/chromium/bb/chromium.webrtc/Mac_Tester/85866/+/recipes/steps/browser_tests/0/stdout (it times out because the video is frozen).
Original change's description:
> Various VP9 high fps fixes
>
> - Enable flexible mode in loopback tools and quality tests
> - Ensure duplicate references are not set by the sender in video header
> - Reset first active spatial layer on keyframe in encoder
> - Make vp9 encoder to not generate spatial references for first active
> layer with external reference control in svc flexible mode
>
> Bug: webrtc:10049
> Change-Id: If9ff576ea8a1a2fef6116b17b5b5adff08c5f8c6
> Reviewed-on: https://webrtc-review.googlesource.com/c/112080
> Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
> Reviewed-by: Sergey Silkin <ssilkin@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#25795}
TBR=ilnik@webrtc.org,ssilkin@webrtc.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: webrtc:10049
Change-Id: Ie6a7daf6414337173fec38c5ff546d509951cba6
Reviewed-on: https://webrtc-review.googlesource.com/c/112400
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Patrik Höglund <phoglund@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25842}
d4d254f315