Examine source code of Remove Site Cookies

{
  "description": "Remove Site Cookies",
  "manifest_version": 2,
  "name": "Remove Site Cookies",
  "version": "1.1resigned1",
  "icons": {
    "48": "icons/216341.svg"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/216341.svg",
    "default_title": "Remove Site Cookies"
  },
  "permissions": [
    "notifications",
    "storage",
    "cookies",
    "activeTab",
    "tabs",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2bd7e938-271d-4c21-b338-fa4b93d28801}"
    }
  }
}