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CSS 60876441cad9

[css-animations] Change AnimationEvent elapsedTime member from 'float' to 'double' (#2666) As per the web-idl spec, float should only be used if there is a specific reason, as double much more closely matches the ECMAScript Number type. In the case of AnimationEvent there does not appear to be such a reason. Furthermore, switching to double allows the elapsedTime to reach higher values without overflowing. A rough calculation (with some assumptions and possible errors) suggests that this change will raise the celing from ~4.5 hours to years.

Stephen McGruer