Function webkit2gtk_sys::webkit_user_content_filter_store_load_finish

pub unsafe extern "C" fn webkit_user_content_filter_store_load_finish(
    store: *mut WebKitUserContentFilterStore, 
    result: *mut GAsyncResult, 
    error: *mut *mut GError
) -> *mut WebKitUserContentFilter

This is supported on crate feature v2_24 only.