We are landing the following change to the Attribution Reporting API focused on: * making it easier to receive API cookie-based debug reports
Currently the API allows cookie-based debug reporting only if third-party cookies are available AND the API caller sets the special unpartitioned ar_debug cookie. This change makes it easier for API callers to use the API’s cookie-based debug reporting by allowing them to receive cookie-based debug reports as long as they have third-party cookie accessibility on the source/destination sites, and they no longer need to actually set the ar_debug cookie. Third-party cookie accessibility is equivalent to the API caller’s ability to set the ar_debug cookie. This change makes it easier for API callers to receive cookie-based API debug reports (i.e. lower chance of misconfigured ar_debug cookies).
Explainers: https://github.com/WICG/attribution-reporting-api/issues/1440