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
continue;
        }
        const gfx::Rect& guest_bounds =
            guest_host_view->render_widget_host_->GetView()->GetViewBounds();
        if (guest_bounds.Contains(mouse_wheel_event.PositionInWidget().x,
                                  mouse_wheel_event.PositionInWidget().y)) {
          blink::WebMouseWheelEvent guest_mouse_wheel_event(mouse_wheel_event);
          guest_mouse_wheel_event.SetPositionInWidget(
              mouse_wheel_event.PositionInWidget().x - guest_bounds.x(),
              mouse_wheel_event.PositionInWidget().y - guest_bounds.y());
          guest_mouse_wheel_event.SetPositionInScreen(
              guest_mouse_wheel_event.PositionInWidget().x,
              guest_mouse_wheel_event.PositionInWidget().y);
          guest_host_view->SendMouseWheelEvent(guest_mouse_wheel_event);
          return;
        }
      }
    }
  }
  if (!render_widget_host_)
    return;
  render_widget_host_->ForwardWheelEvent(event);
}
void OffScreenRenderWidgetHostView::SetPainting(bool painting) {
  painting_ = painting;
  if (software_output_device_) {
    software_output_device_->SetActive(painting_, !paint_callback_running_);
  }
}
bool OffScreenRenderWidgetHostView::IsPainting() const {