// And the things from nsIFrameLoaderOwner
[NoInterfaceObject]
interface MozFrameLoaderOwner {
  [ChromeOnly]
  readonly attribute FrameLoader? frameLoader;

  [ChromeOnly, Throws]
  void presetOpenerWindow(WindowProxy? window);

  [ChromeOnly, Throws]
  void swapFrameLoaders(XULFrameElement aOtherLoaderOwner);

  [ChromeOnly, Throws]
  void swapFrameLoaders(HTMLIFrameElement aOtherLoaderOwner);
};