commit dff792591fb90e6539f2638bc10f98c1946847f9
author Evan Shrubsole <eshr@google.com> Thu Apr 16 09:34:32 2020
committer Commit Bot <commit-bot@chromium.org> Thu Apr 16 13:27:50 2020
tree df39c11dd0a01db2ca8dfb8cc2a0c157406e2a2e
parent d059dfbc06e06402a420ef4abec9b319e834e754

Remove VideoStreamEncoderObserver::AdaptationReason::kNone

Replaces this with 2 methods instead, adding clarity.

ClearAdaptationStats
- Resets the adaptations statistics to 0. This is done,
when the degredation is reset, for example when the preference
is changed to/from BALANCED.

UpdateAdaptationMaskingSettings
- Updates the settings for adaptation statistics reporting.
This way we don't report quality adaptations if quality scaling
is not enabled (same for resolution/fps scaling).

The adaptation counting inside the SendStatisticsProxy is
now done in a struct that counts the totals, and then masks
out these counts based on the adaptation settings. The
MaskedAdaptationSteps uses optionals to hide the values we
shoudn't report, while the AdaptationSteps always hold the real
totals.

All tests have been updated to use the Reset/Clear method as needed.

Now that AdaptationCounters and AdaptSteps use the same structure,
AdaptationCounters was moved to api/video and replaces AdaptSteps.

The AdaptReason enum is also redundant now, and will be removed
in a follow-up CL.

R=hbos@webrtc.org

Bug: webrtc:11392
Change-Id: Iaed6488581325d341a056b5bbf76a01c19d6c282
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/171685
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Evan Shrubsole <eshr@google.com>
Cr-Commit-Position: refs/heads/master@{#31083}