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

recipe_engine:
  https://crrev.com/bf5c53d04c84487f31275133294f5a57145fecf4 (olivernewman@google.com)
    [swarming] Use ensure_tool() to install swarming
  https://crrev.com/9ddf1e1c6ae354ee17de8abd99dc37acdf4dbe60 (olivernewman@google.com)
    [isolated] Use ensure_tool() to install isolated

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

TBR=iannucci@chromium.org

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I2a56b974f6d840e5c846a43881211c82ca3c956b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2216058Reviewed-by: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>