Examine source code of Free VPN

{
  "web_accessible_resources": [
    "blocked.html",
    "scripts/blocked.js",
    "icons/icon-48.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "91.1.0",
      "id": "{ada9cd32-a359-425e-89c1-518acf0c4aa5}"
    }
  },
  "name": "VPN",
  "default_locale": "en",
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "page": "background.html"
  },
  "version": "3.6.1",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "https://freevpnplanet.com/*",
        "https://planetvpnarab.com/*",
        "https://freevpnplanet.net/*"
      ],
      "js": [
        "content/pinModal.js"
      ],
      "css": [
        "content/pinModal.css"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "run_at": "document_end",
      "js": [
        "scripts/webrequests.js",
        "scripts/vpn.js",
        "scripts/client.js"
      ]
    }
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self';",
  "browser_action": {
    "default_title": "VPN",
    "default_popup": "popup.html",
    "default_icon": {
      "19": "icons/icon-19.png",
      "38": "icons/icon-38.png"
    }
  },
  "permissions": [
    "<all_urls>",
    "proxy",
    "storage",
    "unlimitedStorage",
    "history",
    "webRequest",
    "webRequestBlocking",
    "tabs",
    "privacy",
    "management"
  ],
  "description": "__MSG_appDescription__"
}