This will allow the test infrastructure to bypass isolate scheduling
restrictions.


Bug: chromium:1002582
Change-Id: Ib22a599cf6c826c3d412898520dba6f4045175b2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1801995Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Fernando Serboncini <fserb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63811}