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
return is_showing_;
}
void OffScreenRenderWidgetHostView::EnsureSurfaceSynchronizedForLayoutTest() {
  ++latest_capture_sequence_number_;
  SynchronizeVisualProperties();
}
gfx::Rect OffScreenRenderWidgetHostView::GetViewBounds() const {
  if (IsPopupWidget())
    return popup_position_;
  return gfx::Rect(size_);
}
void OffScreenRenderWidgetHostView::SetBackgroundColor(SkColor color) {
  
  
  UpdateBackgroundColorFromRenderer(color);
  if (render_widget_host_) {
    render_widget_host_->SetBackgroundOpaque(SkColorGetA(color) ==
                                             SK_AlphaOPAQUE);
  }
}
base::Optional<SkColor> OffScreenRenderWidgetHostView::GetBackgroundColor()