Until we have a working implementation of the scroll-animations spec, lots of WPT tests will time out and we are skipping them. This bug tracks un-skipping them: scroll-animations/css/animation-fill-outside-range-test.html scroll-animations/css/animation-inactive-outside-range-test.html scroll-animations/css/animation-range-visual-test.html scroll-animations/css/deferred-timeline-composited.html scroll-animations/css/printing/scroll-timeline-default-print.tentative.html scroll-animations/css/scroll-animation-initial-offset.html scroll-animations/css/scroll-timeline-default-iframe.html scroll-animations/css/scroll-timeline-default-quirks-mode.html scroll-animations/css/scroll-timeline-default-writing-mode-rl.html scroll-animations/css/scroll-timeline-default.html scroll-animations/css/scroll-timeline-frame-size-changed.html scroll-animations/css/scroll-timeline-inline-orientation.html scroll-animations/css/scroll-timeline-update-reversed-animation.html scroll-animations/css/view-timeline-range-update-reversed-animation.html scroll-animations/css/view-timeline-range-update.html scroll-animations/css/view-timeline-subject-bounds-update.html scroll-animations/scroll-timelines/animation-with-animatable-interface.html scroll-animations/scroll-timelines/animation-with-display-none.html scroll-animations/scroll-timelines/animation-with-overflow-hidden.html scroll-animations/scroll-timelines/animation-with-root-scroller.html scroll-animations/scroll-timelines/animation-with-transform.html scroll-animations/scroll-timelines/constructor-no-document.html scroll-animations/scroll-timelines/custom-property.html scroll-animations/scroll-timelines/layout-changes-on-percentage-based-timeline.html scroll-animations/scroll-timelines/progress-based-effect-delay.tentative.html scroll-animations/scroll-timelines/set-current-time-before-play.html scroll-animations/scroll-timelines/two-animations-attach-to-same-scroll-timeline-cancel-one.html scroll-animations/scroll-timelines/two-animations-attach-to-same-scroll-timeline.html scroll-animations/view-timelines/range-boundary.html
<rdar://problem/117990446>