static void
XPC_WN_Shared_Proto_ObjectMoved(JSObject* obj, const JSObject* old)
{
    // This can be null if xpc shutdown has already happened
    XPCWrappedNativeProto* p = (XPCWrappedNativeProto*) xpc_GetJSPrivate(obj);
    if (p)
        p->JSProtoObjectMoved(obj, old);
}