Function reflect_dom_object_with_cx 

pub fn reflect_dom_object_with_cx<D, T, U>(
    obj: Box<T>,
    global: &U,
    cx: &mut JSContext,
) -> Root<Dom<T>>
where
    D: DomTypes,
    T: DomObject + DomObjectWrap<D>,
    U: DerivedFrom<<D as DomTypes>::GlobalScope>,

Create the reflector for a new DOM object and yield ownership to the reflector. Deprecated, use reflect_dom_object instead.