Examine source code of GHRepoNameFiller

{
  "manifest_version": 2,
  "name": "GithubAutoFiller",
  "version": "1.1",
  "description": "Fills github archive/delete challenges automatically",
  "icons": {
    "48": "icons/filler-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://github.com/*/*/settings"
      ],
      "js": [
        "fill.js"
      ]
    }
  ]
}