Examine source code of Urilock

{
  "name": "Urilock",
  "description": "Redirects user to the website that user finds via our search system to prevent phising attacks.",
  "version": "1.3resigned1",
  "manifest_version": 2,
  "icons": {
    "16": "icons/16x16.png",
    "128": "icons/128x128.png"
  },
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/128x128.png",
    "default_popup": "urilock.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "urilock.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2ecc53db-4b8b-4e7f-8a45-f6cb16dca1f7}"
    }
  }
}