Examine source code of Antipook: notify

{
  "name": "Antipook: notify",
  "version": "0.4.8",
  "description": "Mostra le notifiche di antipook.",
  "manifest_version": 2,
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "background": {
    "page": "background.html"
  },
  "permissions": [
    "idle",
    "https://antipook.com/"
  ]
}