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
GetDelegatedFrameHost()->SubmitCompositorFrame(
          local_surface_id, std::move(frame), std::move(hit_test_region_list));
    } else {
      if (!copy_frame_generator_.get()) {
        copy_frame_generator_.reset(
            new AtomCopyFrameGenerator(this, frame_rate_threshold_us_));
      }
      
      
      viz::RenderPass* root_pass = frame.render_pass_list.back().get();
      gfx::Size frame_size = root_pass->output_rect.size();
      gfx::Rect damage_rect =
          gfx::ToEnclosingRect(gfx::RectF(root_pass->damage_rect));
      damage_rect.Intersect(gfx::Rect(frame_size));
      
      
      
      GetDelegatedFrameHost()->SubmitCompositorFrame(
          local_surface_id, std::move(frame), std::move(hit_test_region_list));
      
      
      copy_frame_generator_->GenerateCopyFrame(damage_rect);
    }
  }
}
void OffScreenRenderWidgetHostView::ClearCompositorFrame() {
  GetDelegatedFrameHost()->ClearDelegatedFrame();
}
void OffScreenRenderWidgetHostView::ResetFallbackToFirstNavigationSurface() {