Examine source code of Lembrador Dotz

{
  "manifest_version": 2,
  "version": "3.0.6.3",
  "name": "Lembrador Dotz ",
  "description": "Ganhe Dotz pela internet. ",
  "homepage_url": "https://ganheonline.dotz.com.br",
  "author": "Dotz ",
  "icons": {
    "16": "assets/icons/icon16.png",
    "48": "assets/icons/icon48.png",
    "128": "assets/icons/icon128.png"
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "background": {
    "page": "index.html#/background"
  },
  "browser_action": {
    "default_icon": {
      "19": "assets/icons/icon19.png"
    },
    "default_title": "Lembrador Dotz",
    "default_popup": "index.html#/browser-action"
  },
  "content_scripts": [
    {
      "js": [
        "browser-polyfill.js",
        "urlHelper.js",
        "googleSearchPageHandler.js",
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "<all_urls>",
    "cookies",
    "notifications",
    "tabs",
    "storage"
  ],
  "web_accessible_resources": [
    "assets/*",
    "index.html"
  ]
}