This is an automated CL created by the recipe roller. This CL rolls
recipe changes from upstream projects (recipe_engine) into this repository.

The build that created this CL was
https://ci.chromium.org/b/8828167239917036657

recipe_engine:
https://chromium.googlesource.com/infra/luci/recipes-py.git/+/395cb1ed3cb6c74086efd0ff279d7d83a0817c2a
  395cb1e (iannucci@chromium.org)
      [futures] Add BoundedSemaphore and example.

More info is at https://goo.gl/zkKdpD. Use https://goo.gl/noib3a to file a bug.

R=iannucci@chromium.org

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I690a89579344602da00f3923bd61778b9d5d35b6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3331934
Commit-Queue: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>