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 root_layer_.get();
}
content::DelegatedFrameHost*
OffScreenRenderWidgetHostView::GetDelegatedFrameHost() const {
  return delegated_frame_host_.get();
}
#endif
void OffScreenRenderWidgetHostView::SetupFrameRate(bool force) {
  if (!force && frame_rate_threshold_us_ != 0)
    return;
  frame_rate_threshold_us_ = 1000000 / frame_rate_;
  if (GetCompositor()) {
    GetCompositor()->SetAuthoritativeVSyncInterval(
        base::TimeDelta::FromMicroseconds(frame_rate_threshold_us_));
  }
  if (copy_frame_generator_.get()) {
    copy_frame_generator_->set_frame_rate_threshold_us(
        frame_rate_threshold_us_);
  }
  if (begin_frame_timer_.get()) {
    begin_frame_timer_->SetFrameRateThresholdUs(frame_rate_threshold_us_);
  } else {
    begin_frame_timer_.reset(new AtomBeginFrameTimer(
        frame_rate_threshold_us_,
        base::Bind(&OffScreenRenderWidgetHostView::OnBeginFrameTimerTick,
                   weak_ptr_factory_.GetWeakPtr())));
  }
}
void OffScreenRenderWidgetHostView::Invalidate() {