web-animations/web-animations-js — pull request #615 by alancutter (2014-06-26 00:20:11+00:00)
Title: Update EffectCallback parameters to match spec

The parameters passed to custom effect callbacks should be:
`callback EffectCallback = void (double? timeFraction, Animatable currentTarget, Animation animation);`
Spec: http://dev.w3.org/fxtf/web-animations/#idl-def-EffectCallback