At first it was simpler, but having to synchronize the buffer swaps between UI and web processes ended up being quite complex and weak in the end.
Pull request: https://github.com/WebKit/WebKit/pull/17590
Committed 267860@main (8b032261f864): <https://commits.webkit.org/267860@main> Reviewed commits have been landed. Closing PR #17590 and removing active labels.