
First dump layer tree:
{
  "layers": [
    {
      "name": "Scrolling Contents Layer",
      "bounds": [1200, 900],
      "contentsOpaque": true,
      "backgroundColor": "#FFFFFF"
    }
  ]
}

Second dump layer tree:
{
  "layers": [
    {
      "name": "Scrolling Contents Layer",
      "bounds": [1200, 900],
      "contentsOpaque": true,
      "backgroundColor": "#FFFFFF"
    },
    {
      "name": "LayoutNGBlockFlow (relative positioned) DIV id='greatgrandchild'",
      "bounds": [375, 150],
      "contentsOpaque": true,
      "backgroundColor": "#008000",
      "transform": 6
    }
  ],
  "transforms": [
    {
      "id": 1,
      "transform": [
        [1, 0, 0, 0],
        [0, 1, 0, 0],
        [0, 0, 1, 0],
        [12, 12, 0, 1]
      ]
    },
    {
      "id": 2,
      "parent": 1,
      "transform": [
        [1, 0, 0, 0],
        [0, 1, 0, 0],
        [0, 0, 1, 0],
        [47, 59, 0, 1]
      ]
    },
    {
      "id": 3,
      "parent": 2,
      "transform": [
        [1, 0, 0, 0],
        [0, 1, 0, 0],
        [0, 0, 1, 0],
        [15, 15, 0, 1]
      ]
    },
    {
      "id": 4,
      "parent": 3,
      "transform": [
        [0.866025403784439, 0.5, 0, 0],
        [-0.5, 0.866025403784439, 0, 0],
        [0, 0, 1, 0],
        [0, 0, 0, 1]
      ],
      "origin": [150, 150]
    },
    {
      "id": 5,
      "parent": 4,
      "transform": [
        [1, 0, 0, 0],
        [0, 1, 0, 0],
        [0, 0, 1, 0],
        [150, 0, 0, 1]
      ]
    },
    {
      "id": 6,
      "parent": 5,
      "transform": [
        [0.5, 0, -0.866025403784439, 0.00144337567297406],
        [0, 1, 0, 0],
        [0.866025403784439, 0, 0.5, -0.000833333333333333],
        [-45, 45, 150, 0.75]
      ],
      "origin": [187.5, 75]
    }
  ]
}

Third dump layer tree:
{
  "layers": [
    {
      "name": "Scrolling Contents Layer",
      "bounds": [1200, 900],
      "contentsOpaque": true,
      "backgroundColor": "#FFFFFF"
    }
  ]
}