This is a follow-up patch of bug 207750 to support AVIFs that have animation.
Created attachment 423145 [details]
Created attachment 423690 [details]
Comment on attachment 423690 [details]
Thanks. Let's move on to bug 223127
Committed r274728: <https://commits.webkit.org/r274728>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 423690 [details].