Examine source code of TOS auto accept

{
  "manifest_version": 2,
  "name": "TOS auto accept",
  "version": "1.0",
  "description": "Automatically accept TOS on signup pages",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "TOSify.js"
      ],
      "run_at": "document_start"
    }
  ]
}