void ScrollAnimatorNone::didAddHorizontalScrollbar(Scrollbar*) { updateVisibleLengths(); }
void ScrollAnimatorNone::willEndLiveResize() { updateVisibleLengths(); }
void ScrollAnimatorNone::didAddVerticalScrollbar(Scrollbar*) { updateVisibleLengths(); }
void ScrollAnimator::updateAfterLayout() { updateVisibleLengths(); }