depot_tools version of https://crrev.com/c/3526975.

Change-Id: I9c46525322ebfa36ebde67bb5fe00249cdf51fca
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3591072Reviewed-by: Scott Graham <scottmg@chromium.org>
Reviewed-by: Gavin Mak <gavinmak@google.com>
Commit-Queue: David Dorwin <ddorwin@chromium.org>
Reviewed-by: Aravind Vasudevan <aravindvasudev@google.com>