Examine source code of AutoAuth

{
  "manifest_version": 2,
  "name": "AutoAuth",
  "version": "3.1.2resigned1",
  "description": "Automatically provides HTTP authentication credentials.",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "auth.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "applications": {
    "gecko": {
      "id": "autoauth@efinke.com",
      "strict_min_version": "57.0"
    }
  }
}