See the comment here:
https://chromium-review.googlesource.com/c/v8/v8/+/719417/2/src/value-serializer.cc#496

BUG=v8:6895
R=clemensh@chromium.org

Change-Id: I89a6ba0986def1776ef3be9c72a2c5b6260b0c98
Reviewed-on: https://chromium-review.googlesource.com/730768Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48842}