Examine source code of Skyyart Extension

{
  "manifest_version": 2,
  "name": "Skyyart Extension",
  "version": "1.0",
  "description": "Soyez avertis lorsque Skyyart est en Live !",
  "browser_action": {
    "default_popup": "new.html"
  },
  "icons": {
    "12": "img/icon16.png",
    "32": "img/icon16.png",
    "48": "img/icon16.png",
    "128": "img/icon16.png"
  },
  "background": {
    "scripts": [
      "back.js",
      "config.js"
    ]
  },
  "permissions": [
    "tabs",
    "storage",
    "notifications",
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{efdaa0ee-3f4a-425b-8b41-837a8fcdb931}"
    }
  }
}