Need a Linux impl for https://github.com/electron/electron/pull/12485
atom/browser/api/atom_api_top_level_window.h
v8::Local<v8::Value> val,
                     atom::NativeWindow** out) {
    
    if (val->IsNull()) {
      *out = NULL;
      return true;
    }
    atom::api::TopLevelWindow* window;
    if (!Converter<atom::api::TopLevelWindow*>::FromV8(isolate, val, &window))
      return false;
    *out = window->window();
    return true;
  }
};
}  
#endif