GitLab

Reuses the general check for SiteInstance compatibility regarding COOP+COEP
isolation.

Bug: 1107814
Change-Id: I0ec25d36a650e23a103d2d509c034d240f953b1b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2398520
Commit-Queue: Arthur Hemery <ahemery@chromium.org>
Reviewed-by: Alex Moshchuk <alexmos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#805266}