This section potentially contains allocations and thus gc, all object
references should be handlified.

Bug: v8:9333
Change-Id: I5814e66e8b9b75a8bd952afecae7a3a27b42a642
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1647695
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62012}