[V8] Add dry-run support to waterfall bot

Change-Id: I4d7930e34a26eea112e32ef431a27149989caa07
Reviewed-on: https://chromium-review.googlesource.com/c/infra/experimental/+/5307794
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
1 file changed