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 painting_;
}
void OffScreenRenderWidgetHostView::SetFrameRate(int frame_rate) {
  if (parent_host_view_) {
    if (parent_host_view_->GetFrameRate() == GetFrameRate())
      return;
    frame_rate_ = parent_host_view_->GetFrameRate();
  } else {
    if (frame_rate <= 0)
      frame_rate = 1;
    if (frame_rate > 240)
      frame_rate = 240;
    frame_rate_ = frame_rate;
  }
  SetupFrameRate(true);
  for (auto* guest_host_view : guest_host_views_)
    guest_host_view->SetFrameRate(frame_rate);
}
int OffScreenRenderWidgetHostView::GetFrameRate() const {
  return frame_rate_;
}
#if !defined(OS_MACOSX)
ui::Compositor* OffScreenRenderWidgetHostView::GetCompositor() const {
  return compositor_.get();
}
ui::Layer* OffScreenRenderWidgetHostView::GetRootLayer() const {