Got disabled in chromium 71 upgrade https://github.com/electron/electron/commit/798b2a3ffd55c477af6258f0afb71000c9f8ecde

/cc @brenca @codebytere 
atom/browser/osr/osr_render_widget_host_view.h
return browser_compositor_.get();
  }
#endif
  content::DelegatedFrameHost* GetDelegatedFrameHost() const;
  void Invalidate();
  void InvalidateBounds(const gfx::Rect&);
  content::RenderWidgetHostImpl* render_widget_host() const {
    return render_widget_host_;
  }
  gfx::Size size() const { return size_; }
  void set_popup_host_view(OffScreenRenderWidgetHostView* popup_view) {
    popup_host_view_ = popup_view;
  }
  void set_child_host_view(OffScreenRenderWidgetHostView* child_view) {
    child_host_view_ = child_view;
  }
 private:
#if defined(OS_MACOSX)
  display::Display GetDisplay();
  void OnDidUpdateVisualPropertiesComplete(
      const cc::RenderFrameMetadata& metadata);
#endif
  void SetupFrameRate(bool force);
  void ResizeRootLayer(bool force);
  viz::FrameSinkId AllocateFrameSinkId(bool is_guest_view_hack);