Mario Vs. Donkey Kong New Tab

manifest.json

{
  "background": {
    "scripts": [
      "js/bg.js"
    ]
  },
  "browser_action": {
    "default_icon": "images/icon.png"
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "description": "Mario Vs. Donkey Kong New Tab is now available on Chrome",
  "icons": {
    "16": "images/16.png",
    "48": "images/48.png",
    "128": "images/icon.png"
  },
  "content_security_policy": "script-src 'self' https://*.google.com 'unsafe-eval'; object-src 'self'",
  "manifest_version": 2,
  "name": "Mario Vs. Donkey Kong New Tab",
  "offline_enabled": true,
  "update_url": "https://clients2.google.com/service/update2/crx",
  "version": "251.290.120.55"
}