CompositorElementId PaintLayerScrollableArea::GetCompositorElementId() const {
  return CompositorElementIdFromUniqueObjectId(
      GetLayoutBox()->UniqueId(), CompositorElementIdNamespace::kScroll);
}

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.