a5edd70830
Basically, we call `ViewTransition::GetGroupKeyframes()` when any computed values get changed on this element. For general CSS Animation cases, we rebuild Keyframes because any of the property values (including timing function) may be different. Therefore, we have to do the similar things for dynamic group keyframes. The size and transform are set from the captured elements, so I think they are immutatable (and once they get changed, we should skip view transitions). The only exception is `animation-timing-function`. We have to update the timing function when invaliding the animations. Note that `animation-composition` can also be keyframe-specific but we use `Auto` value for it by default, and it means we are always using the computed values from the element, so we don't have to worry about it. Only timing function is special. Differential Revision: https://phabricator.services.mozilla.com/D248366
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