Examine source code of Ninova Beautifier

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Ninova Beautifier",
  "description": "Modern Design for Ninova",
  "manifest_version": 2,
  "author": "Cenk Ergen",
  "default_locale": "en",
  "version": "1.4.5",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "css": [
        "style.css"
      ],
      "js": [
        "enums.js",
        "style.js"
      ],
      "matches": [
        "https://ninova.itu.edu.tr/*"
      ],
      "match_about_blank": false,
      "run_at": "document_start",
      "all_frames": false
    },
    {
      "matches": [
        "https://ninova.itu.edu.tr/Sinif/*/UzaktanEgitim"
      ],
      "css": [
        "uzaktanEgitim.css"
      ],
      "run_at": "document_idle",
      "match_about_blank": false,
      "all_frames": false
    },
    {
      "matches": [
        "https://itu-edu-tr.zoom.us/rec/play/*"
      ],
      "js": [
        "enums.js",
        "zoom.js"
      ],
      "run_at": "document_idle",
      "all_frames": false,
      "match_about_blank": false
    }
  ],
  "options_ui": {
    "chrome_style": false,
    "open_in_tab": true,
    "page": "settings/settings.html"
  },
  "permissions": [
    "storage",
    "contextMenus",
    "unlimitedStorage"
  ],
  "background": {
    "persistent": false,
    "scripts": [
      "enums.js",
      "background.js"
    ]
  },
  "offline_enabled": false,
  "web_accessible_resources": [
    "icons/icon128.png",
    "captions.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b5bbfbb2-9104-4410-8722-470b4b29c436}"
    }
  }
}