The additional variant does not use wrapper disabling phase tests and negated
outcome processor. This allows to ensure that tests marked FAIL_PHASE_ONLY, do
actually fail without it.

R=machenbach@chromium.org

Bug: v8:8467
Change-Id: I66e07bd7107520872cc013bf0f33fdc6664baf56
Reviewed-on: https://chromium-review.googlesource.com/c/1361164
Commit-Queue: Sergiy Belozorov <sergiyb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58211}