I deprecated the API in 257010@main and removed the functionality assuming nobody was actually using it, but I was wrong. So, keep the API deprecated, but bring back the implementation for backwards compatibility.
Pull request: https://github.com/WebKit/WebKit/pull/9280
Committed 259535@main (91955d0ab066): <https://commits.webkit.org/259535@main> Reviewed commits have been landed. Closing PR #9280 and removing active labels.