Tests highlights for display locking.

container{
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    {
      "path": [
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      ],
      "fillColor": "rgba(255, 0, 0, 0)",
      "outlineColor": "rgba(128, 0, 0, 0)",
      "name": "content"
    },
    {
      "path": [
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        "L",
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      ],
      "fillColor": "rgba(0, 255, 0, 0)",
      "name": "padding"
    },
    {
      "path": [
        "M",
        8,
        8,
        "L",
        792,
        8,
        "L",
        792,
        18,
        "L",
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      ],
      "fillColor": "rgba(0, 0, 255, 0)",
      "name": "border"
    },
    {
      "path": [
        "M",
        8,
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        "L",
        792,
        18,
        "L",
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      ],
      "fillColor": "rgba(255, 255, 255, 0)",
      "name": "margin"
    }
  ],
  "showRulers": true,
  "showExtensionLines": true,
  "showAccessibilityInfo": true,
  "colorFormat": "hex",
  "elementInfo": {
    "tagName": "div",
    "idValue": "container",
    "nodeWidth": "784",
    "nodeHeight": "10",
    "isKeyboardFocusable": false,
    "accessibleName": "",
    "accessibleRole": "generic",
    "layoutObjectName": "LayoutGrid",
    "isLocked": true,
    "showAccessibilityInfo": true
  }
}
child{
  "paths": [
    {
      "path": [
        "M",
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        8,
        "L",
        792,
        8,
        "L",
        792,
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        "L",
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        "Z"
      ],
      "fillColor": "rgba(255, 0, 0, 0)",
      "outlineColor": "rgba(128, 0, 0, 0)",
      "name": "content"
    },
    {
      "path": [
        "M",
        8,
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        "L",
        792,
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        "L",
        792,
        18,
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      ],
      "fillColor": "rgba(0, 255, 0, 0)",
      "name": "padding"
    },
    {
      "path": [
        "M",
        8,
        8,
        "L",
        792,
        8,
        "L",
        792,
        18,
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      ],
      "fillColor": "rgba(0, 0, 255, 0)",
      "name": "border"
    },
    {
      "path": [
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        8,
        "L",
        792,
        18,
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        "Z"
      ],
      "fillColor": "rgba(255, 255, 255, 0)",
      "name": "margin"
    }
  ],
  "showRulers": true,
  "showExtensionLines": true,
  "showAccessibilityInfo": true,
  "colorFormat": "hex",
  "elementInfo": {
    "tagName": "div",
    "idValue": "container",
    "nodeWidth": "784",
    "nodeHeight": "10",
    "isKeyboardFocusable": false,
    "accessibleName": "",
    "accessibleRole": "generic",
    "layoutObjectName": "LayoutGrid",
    "isLockedAncestor": true,
    "showAccessibilityInfo": true
  }
}