Examine source code of Cookie Manager Selector

{
  "manifest_version": 2,
  "name": "Cookie Manager Selector",
  "version": "1.0",
  "permissions": [
    "cookies",
    "storage",
    "tabs",
    "alarms",
    "notifications"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{68466a17-9f9c-4c33-a552-a3a29aa5da72}"
    }
  }
}