SourceLocation is needed to track Persistents.

Bug: chromium:1056170
Change-Id: I4d5cf151a4d27b4c29582ff8195cdcb7453afe1c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2132790
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66974}