Need a Linux impl for https://github.com/electron/electron/pull/12485
atom/browser/api/atom_api_top_level_window.cc
std::vector<v8::Local<v8::Value>> ret;
  for (auto const& views_iter : browser_views_) {
    ret.push_back(v8::Local<v8::Value>::New(isolate(), views_iter.second));
  }
  return ret;
}
bool TopLevelWindow::IsModal() const {
  return window_->is_modal();
}
bool TopLevelWindow::SetThumbarButtons(mate::Arguments* args) {
#if defined(OS_WIN)
  std::vector<TaskbarHost::ThumbarButton> buttons;
  if (!args->GetNext(&buttons)) {
    args->ThrowError();
    return false;
  }
  auto* window = static_cast<NativeWindowViews*>(window_.get());
  return window->taskbar_host().SetThumbarButtons(
      window_->GetAcceleratedWidget(), buttons);
#else
  return false;
#endif
}
#if defined(TOOLKIT_VIEWS)
void TopLevelWindow::SetIcon(mate::Handle<NativeImage> icon) {