Examine source code of iLockIt

{
  "manifest_version": 2,
  "name": "iLockIt",
  "version": "1.0.0",
  "description": "Lock specified sites behind a password.",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "tabs",
    "<all_urls>"
  ],
  "icons": {
    "48": "icons/lock.svg",
    "96": "icons/lock.svg"
  },
  "browser_action": {
    "default_title": "iLockIt",
    "default_icon": "icons/lock.svg"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "web_accessible_resources": [
    "lock.html",
    "lock.css",
    "lock.js"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "site-locker@example.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "collects_data": false,
        "data_types": [],
        "purposes": []
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}