Examine source code of The Wolf Live

{
  "manifest_version": 2,
  "name": "The Wolf Live",
  "version": "1.3.5",
  "description": "Notifications des lives de The Wolf.",
  "browser_action": {
    "default_popup": "index.html"
  },
  "permissions": [
    "webRequest",
    "notifications",
    "tabs"
  ],
  "icons": {
    "96": "pyro_x96.png"
  },
  "background": {
    "scripts": [
      "streamCheck.js"
    ]
  }
}