commit 64469037b72882acab2267425921218209093f65
author Evan Shrubsole <eshr@google.com> Thu Jun 11 08:45:29 2020
committer Commit Bot <commit-bot@chromium.org> Thu Jun 11 09:59:42 2020
tree 4a9709c83617d8d95a8d3ce84b856b15b7b2d83e
parent 8a89b5bc0d850e1d38b41db3c97b3b6547f2f896

Only allow most limited resource to trigger adapt up

A more detailed explaination is in the bug, but this changes
the way that adaptation happens when multiple resources are
limited. Only the one that is most limited can trigger an
adaptation up. If multiple resources are most limited both
need to underuse to adapt up.

Some of the changes in this patch to make it all work:

* VideoStreamEncoder unittests that did not reflect this
new behaviour have been changed.

* PeekNextRestrictions returns the adaptation counters as
well as the restrictions.

* Adaptation statstics have changed so that when adapting
up all resources are tagged as triggering the adaptation.
Additionally the statistics for the current adaptation is
now the total number of adaptations per reason, rather then
the number of adaptations due to that reason.

* PreventAdaptUpDueToActiveCounts is removed as most limited
resource is a strong implementation of that.

Bug: webrtc:11553
Change-Id: If1545a201c8e019598edf82657a1befde8b05268
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/176128
Commit-Queue: Evan Shrubsole <eshr@google.com>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31497}