This reverts commit 26e50469513a3df2abb88c9ae2a5af70de0b029c.
Reason for revert: Part of change that may cause crashes.
Original change's description:
> Adjusts allowable thread count for vp9 decoders.
>
> Set 2 thread as target for 1280x720 pixel count, and then scale up
> linearly from there - but cap at physical core count.
> For common resolutions this results in:
> 1 for 360p
> 2 for 720p
> 4 for 1080p
> 8 for 1440p
> 18 for 4K
>
> Bug: webrtc:11551
> Change-Id: I666bd971eccddee096749f20d3b08eb40fe868ad
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/177012
> Reviewed-by: Johannes Kron <kron@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#31513}
TBR=sprang@webrtc.org,kron@webrtc.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: webrtc:11551
Change-Id: I4ea5166efeed3d55255a0243a69deb584a0e19e2
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/177240
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31517}
aa5c1e8fd2