R=clemensh@chromium.org

Also-By: clemensh@chromium.org
Bug: v8:9288, v8:8217
Change-Id: I1b4b7b5f06c49a6047d98a3a5db8bfa0c277be09
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1627981
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61822}