This is a reland of 0489cc12

Don't remove email_regexp argument, as downstream still passes it.

Original change's description:
> Reland "presubmit: Use new API to check for owners approval"
>
> New API was updated to properly support '*' as owner.
>
> Change-Id: If14144f83484731fd5534c03cb9fde4b18f49fe9
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2628703
> Auto-Submit: Edward Lesmes <ehmaldonado@chromium.org>
> Reviewed-by: Josip Sokcevic <sokcevic@google.com>
> Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>

Change-Id: Id137aca0036c2ebf11ec56a12f4e053cd2cc6637
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2639411
Auto-Submit: Edward Lesmes <ehmaldonado@chromium.org>
Commit-Queue: Gavin Mak <gavinmak@google.com>
Reviewed-by: Gavin Mak <gavinmak@google.com>