Tested by:
* `python recipes.py test run`
* Tested end-to-end by patching in this unsubmitted change in Skia's recipes with https://skia-review.googlesource.com/c/skia/+/532768

Bug: chromium:1319415
Change-Id: Ia1c9c495ef6482b3fdb494e1c1c9320541bcd0c5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3602901Reviewed-by: Gavin Mak <gavinmak@google.com>
Commit-Queue: Ravi Mistry <rmistry@chromium.org>