We can make the code clearer in places where downcast<> is used for DeclarativeAnimation, CSSAnimation or CSSTransition.
Pull request: https://github.com/WebKit/WebKit/pull/8375
Committed 258636@main (8877afa46f53): <https://commits.webkit.org/258636@main> Reviewed commits have been landed. Closing PR #8375 and removing active labels.
<rdar://problem/104008041>