GitLab

What:
Adds new chrome/ layer embedder controls for the Conversion Measurement
API which proxy to privacy sandbox settings.

Why:
The existing integration only checks for 3P cookie blocking, whereas
the privacy sandbox settings check whether 3Ps are allowed for a given
context.

This also fixes a privacy sandbox settings bug in which the wrong
origin was supplied when checking if a report can be sent for a given
set of origins.

Note: This was previously https://ccrev.com/c/2613686, but that change
was accidentally deleted.

Bug: 1163721
Change-Id: I10aba286ad7c641fe8f19f8ad327cf6eabdc3c33
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2627093
Commit-Queue: John Delaney <johnidel@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Charlie Harrison <csharrison@chromium.org>
Reviewed-by: Theodore Olsauskas-Warren <sauski@google.com>
Cr-Commit-Position: refs/heads/master@{#843857}