Examine source code of Easy Cookiee

{
  "manifest_version": 2,
  "name": "Easy Cookiee",
  "version": "1.2",
  "permissions": [
    "cookies",
    "tabs",
    "storage",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": {
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{383e4ef5-5d4d-4ff6-b6ad-c1da3c3a15d7}"
    }
  }
}