Check that things won't break before further changes are made.

Bug: 1002153
Change-Id: I41866f26334bf9ec2732bc0f25007234a95130e4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1854749
Auto-Submit: Edward Lesmes <ehmaldonado@chromium.org>
Commit-Queue: Andrii Shyshkalov <tandrii@google.com>
Reviewed-by: Andrii Shyshkalov <tandrii@google.com>