Got disabled in chromium 71 upgrade https://github.com/electron/electron/commit/798b2a3ffd55c477af6258f0afb71000c9f8ecde

/cc @brenca @codebytere 
atom/browser/osr/osr_render_widget_host_view.cc
const blink::WebMouseEvent& event) {
  for (auto* proxy_view : proxy_views_) {
    gfx::Rect bounds = proxy_view->GetBounds();
    if (bounds.Contains(event.PositionInWidget().x,
                        event.PositionInWidget().y)) {
      blink::WebMouseEvent proxy_event(event);
      proxy_event.SetPositionInWidget(
          proxy_event.PositionInWidget().x - bounds.x(),
          proxy_event.PositionInWidget().y - bounds.y());
      ui::MouseEvent ui_event = UiMouseEventFromWebMouseEvent(proxy_event);
      proxy_view->OnEvent(&ui_event);
      return;
    }
  }
  if (!IsPopupWidget()) {
    if (popup_host_view_ &&
        popup_host_view_->popup_position_.Contains(
            event.PositionInWidget().x, event.PositionInWidget().y)) {
      blink::WebMouseEvent popup_event(event);
      popup_event.SetPositionInWidget(
          popup_event.PositionInWidget().x -