Function webkit2gtk_webextension_sys::webkit_dom_node_insert_before

pub unsafe extern "C" fn webkit_dom_node_insert_before(
    self_: *mut WebKitDOMNode, 
    newChild: *mut WebKitDOMNode, 
    refChild: *mut WebKitDOMNode, 
    error: *mut *mut GError
) -> *mut WebKitDOMNode