Fixed https://bugs.webkit.org/show_bug.cgi?id=22870
I added calls beginAnimationUpdate() and endAnimationUpdate() calls
to AnimationController. These are called by Document at the start
and end of the recalcStyle cycle. Right now, I'm just using the
beginAnimationUpdate() method to reset an animation time value.
The first time the animation time is accessed after this reset I set
it to the currentTime. So all animations in that cycle get the same
start time.
The test cases checked in test this, but in the case of the 'left'
test it actually doesn't make any difference in most cases. This is
because values are clamped to whole pixels, so the start times would
have to be pretty far off for the test to fail using the old
currentTime() model. Still, under really heavy load, it's possible for
the test to fail without these changes.
The 'transform' test is another story. It animates to the full resolution
of a floating point number, so the test fails miserably without this
fix.
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@39667
268f45cc-cd09-0410-ab3c-
d52691b4dbfc