It's very helpful to know when they die.

Bug: v8:7790
Change-Id: I08a369da7eb19d46ecdc02b404b0085d6410ab4d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1643168Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61978}