The goal of this change is to facilitate analyzing DEPS autorolls https://crrev.com/c/2250928

Change-Id: Icbebd144a85f7e24aa638f93d8c30f3f0aab1e5c
Bug: 923016
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2239069Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>
Commit-Queue: Gregory Guterman <guterman@google.com>