Examine source code of Toggle Cookies

{
  "manifest_version": 2,
  "name": "Toggle Cookies",
  "version": "1.2.0",
  "description": "__MSG_extensionDescription__",
  "browser_specific_settings": {
    "gecko": {
      "id": "{f83b5e4a-3360-4e16-a0ed-c6d77d3198ac}",
      "strict_min_version": "59.0"
    }
  },
  "icons": {
    "24": "icons/togglecookies.svg",
    "32": "icons/togglecookies.svg",
    "50": "icons/togglecookies.svg"
  },
  "background": {
    "scripts": [
      "iconupdater.js",
      "background.js"
    ]
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "icons/togglecookies.svg",
    "default_title": "__MSG_button_title__",
    "theme_icons": [
      {
        "dark": "icons/togglecookies.svg",
        "light": "icons/togglecookies-light.svg",
        "size": 19
      }
    ]
  },
  "commands": {
    "_execute_browser_action": {}
  },
  "permissions": [
    "privacy",
    "storage"
  ],
  "default_locale": "en"
}