Run unit tests in presubmit check

Change-Id: Ifac7f9e085061a7e71a4b08673bffc5bf309071b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7682780
Reviewed-by: James Woo <jewoo@google.com>
Commit-Queue: Jyothi Mathew <jyomathew@google.com>
Reviewed-by: Erik Staab <estaab@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1602299}
NOKEYCHECK=True
GitOrigin-RevId: 4a2cea10f8b46c8d7c516d72e889645806119dc8