We need the didExceedMemoryFootprintThreshold callback to also carry state about whether a page load was private relayed or not.
<rdar://problem/123799163>
Pull request: https://github.com/WebKit/WebKit/pull/25305
Committed 275586@main (48ca65b18900): <https://commits.webkit.org/275586@main> Reviewed commits have been landed. Closing PR #25305 and removing active labels.