pub fn scrollbar_hit_test(
ir: &CoreIR,
layout: &LayoutSnapshot,
scroll_map: &ScrollStateMap,
point: LayoutPoint,
) -> Option<ScrollbarHit>pub fn scrollbar_hit_test(
ir: &CoreIR,
layout: &LayoutSnapshot,
scroll_map: &ScrollStateMap,
point: LayoutPoint,
) -> Option<ScrollbarHit>