libyuv doesn't have its own swarming pools, so this is trivial.
Follow up will opt in libyuv to actually use realms when creating
builds.
Bug: chromium:1203285
Change-Id: Idc38be967992255cb1b852edcf114ac98df4fc5d
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2854458
Commit-Queue: Andrii Shyshkalov <tandrii@google.com>
Reviewed-by: Mirko Bonadei <mbonadei@chromium.org>
