pub trait PopupFrameCreationListenerProxyInterface: Send + Sync {
type OnPopupFrameCreatedResponseFut: Future<Output = Result<(), Error>> + Send;
// Required method
fn on_popup_frame_created(
&self,
frame: ClientEnd<FrameMarker>,
info: PopupFrameCreationInfo,
) -> Self::OnPopupFrameCreatedResponseFut;
}