The preference check has been removed from CanThrottleTransformChanges
because we already perform that check that when deciding if we should run
an animation on the compositor (in CanPerformOnCompositorThread, as called
by GetAnimationsForCompositor). Hence if the "is running on compositor" flag
is true, we can assume the preference is set (or was set when we decided to
put the animation on the compositor-- we don't worry about pulling the
animation off the compositor immediately if the preference changes while
it is running)
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