For threaded animation resolution, we'll need to encode and decode additional types to send effects over IPC.
Pull request: https://github.com/WebKit/WebKit/pull/10782
Committed 261049@main (a8dab28990ee): <https://commits.webkit.org/261049@main> Reviewed commits have been landed. Closing PR #10782 and removing active labels.
<rdar://problem/106130426>