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Spec
http://dev.w3.org/csswg/css-animations-1/
Summary
This proposal is to ship the unprefixed animation-* properties and @keyframes at-rule.
Chrome has shipped the -webkit-* prefixed versions of these since 2009.
Link to “Intent to Implement” blink-dev discussion
https://groups.google.com/a/chromium.org/d/msg/blink-dev/BytHPljnifk/nF91Krd22DcJ
Is this feature supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?
Yes.
Debuggability
sa...@chromium.org is currently working on DevTools support for animations.
Timeline slowdown: http://blog.chromium.org/2015/01/chrome-41-beta-new-es6-features-and.html
Cubic-bezier timing function editor: https://www.youtube.com/watch?v=TBDzHRa6B5I
Compatibility Risk
Low, every other engine has shipped unprefixed CSS Animations.
The specification is still evolving, for example it has been agreed that all properties are valid for animation though no browser has yet implemented this. We will continue to update CSS Animation’s behaviour as the specification and other browser implementations evolve.
One risk is that sites may be using -webkit-filter in @-webkit-keyframes and unprefixed filter in @keyframes. Because we don’t yet support the unprefixed filter property those animations will cease to animate filter. Such sites are unlikely to become broken in this scenario as filter is primarily a cosmetic effect.
-webkit-filter is present in 0.8% of all animations (including transitions): https://www.chromestatus.com/metrics/css/timeline/animated/413
OWP launch tracking bug?
https://code.google.com/p/chromium/issues/detail?id=154771
Link to entry on the feature dashboard
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