Examine source code of Cloud Firewall

{
  "manifest_version": 2,
  "name": "Cloud Firewall",
  "description": "__MSG_description__",
  "version": "3.0",
  "icons": {
    "16": "images/shield16.png",
    "32": "images/shield32.png",
    "48": "images/shield48.png",
    "64": "images/shield64.png",
    "128": "images/shield128.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "notifications",
    "tabs",
    "http://*/*",
    "https://*/*",
    "dns"
  ],
  "applications": {
    "gecko": {
      "id": "cloudfirewall@nikisoft.one"
    }
  },
  "browser_action": {
    "default_title": "Cloud Firewall",
    "default_popup": "popup.html",
    "default_icon": "images/shield.svg",
    "theme_icons": [
      {
        "light": "images/shield-light16.png",
        "dark": "images/shield16.png",
        "size": 16
      },
      {
        "light": "images/shield-light32.png",
        "dark": "images/shield32.png",
        "size": 32
      }
    ]
  },
  "background": {
    "scripts": [
      "js/background/variables.js",
      "libraries/punycode.js",
      "libraries/publicsuffixlist.min.js",
      "libraries/uritools.js",
      "libraries/lz-string.min.js",
      "js/data/someKnownhosts.js",
      "libraries/forge.min.js",
      "js/data/CIDRblocks.js",
      "libraries/ipaddr.min.js",
      "js/background/ip-range-check.js",
      "js/background/optionforDecentraleyesUsers.js",
      "js/background/background.js"
    ],
    "persistent": true
  },
  "options_ui": {
    "browser_style": false,
    "open_in_tab": true,
    "page": "settings.html"
  },
  "default_locale": "en"
}