void PaintLayerScrollableArea::ScrollbarVisibilityChanged() {
  UpdateScrollbarEnabledState();

  layer_->GetLayoutObject().SetNeedsPaintPropertyUpdate();

  layer_->ClearClipRects();

  if (LayoutView* view = GetLayoutBox()->View())
    view->ClearHitTestCache();
}

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.