NEW 52037
Start time of an animation can be before the start of the animation frame. 
https://bugs.webkit.org/show_bug.cgi?id=52037
Summary Start time of an animation can be before the start of the animation frame.
Chris Marrin
Reported 2011-01-06 17:21:19 PST
AnimationController has a notion of an animation frame. When you start a cycle, you snapshot the current time. Then all animations in that frame get the same timestamp. This concept has been globalized in AnimationTimeController. But right now AnimationController and AnimationTimeController aren't in sync about when a frame starts. Until they are, the ASSERT in KeyframeAnimation::fetchIntervalEndpointsForProperty has been commented out
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James Robinson
Comment 1 2011-01-06 19:14:22 PST
Yeah, the way AnimationTimeController calculates the start time is not ideal. I think we (I) need to rework this - I'll post thoughts on https://bugs.webkit.org/show_bug.cgi?id=51952
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