Examine source code of FB Link Finder

{
  "manifest_version": 2,
  "name": "FB Account Link Finder",
  "version": "2.13",
  "description": "Tìm, highlight và quản lý link đặc biệt trên Facebook",
  "icons": {
    "48": "icons/icon48.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icons/icon48.png",
    "default_badge_text": ""
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "protected.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.facebook.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "*://*.facebook.com/*",
    "contextMenus",
    "alarms",
    "notifications"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "fb-link-finder@kyvibach"
    }
  }
}