{
  "layers": [
    {
      "name": "Scrolling Contents Layer",
      "bounds": [800, 600],
      "contentsOpaque": true,
      "backgroundColor": "#FFFFFF",
      "paintInvalidations": [
        {
          "object": "LayoutNGBlockFlow (relative positioned) DIV id='test' class='selected'",
          "rect": [8, 8, 100, 100],
          "reason": "background"
        }
      ]
    }
  ]
}