bool PaintLayerScrollableArea::SetHasHorizontalScrollbar(bool has_scrollbar) {
  if (FreezeScrollbarsScope::ScrollbarsAreFrozen())
    return false;

  if (has_scrollbar == HasHorizontalScrollbar())
    return false;

  SetScrollbarNeedsPaintInvalidation(kHorizontalScrollbar);

  scrollbar_manager_.SetHasHorizontalScrollbar(has_scrollbar);

  UpdateScrollOrigin();

  if (HasHorizontalScrollbar())
    HorizontalScrollbar()->StyleChanged();
  if (HasVerticalScrollbar())
    VerticalScrollbar()->StyleChanged();

  SetScrollCornerNeedsPaintInvalidation();

  if (GetLayoutBox()->GetDocument().HasAnnotatedRegions())
    GetLayoutBox()->GetDocument().SetAnnotatedRegionsDirty(true);
  return true;
}

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.