R=jgruber@chromium.org

Bug: v8:9429, v8:9396
Change-Id: I0e51e8478d7232bc51bed26bc26560c6e6450366
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1690946Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62592}