This won't affect the real release but will give more clusterfuzz + test
coverage on V8 side.

BUG=v8:5516

Change-Id: I6ed29b1a1b23b5bf1ce9a9a9dfe741c53312ee54
Reviewed-on: https://chromium-review.googlesource.com/640373Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47664}