Examine source code of Cookie Manager V2

{
  "manifest_version": 2,
  "name": "Cookie Manager V2",
  "version": "1.3",
  "description": "View, search, delete, and manage cookies for the current website.",
  "permissions": [
    "cookies",
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "32": "icons/logo_32.png",
      "64": "icons/logo_64.png",
      "128": "icons/logo_128.png"
    }
  },
  "icons": {
    "32": "icons/logo_32.png",
    "64": "icons/logo_64.png",
    "128": "icons/logo_128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{76bd9ba1-081c-4cb0-87c7-f4abdba29c8d}"
    }
  }
}