Examine source code of Vyou Box

{
  "applications": {
    "gecko": {
      "id": "{2a68e1b8-2ec7-4c58-92bc-a83d54b5459d}"
    }
  },
  "browser_action": {
    "default_icon": "icons/64x64.png",
    "default_title": "UTube Box"
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "description": "UTube Box gives the user the ability to load https://youtube.com/tv like an app instead of a website. The secondary feature of the UTube Box extension is that it can replace your new tab page with web search form.",
  "homepage_url": "https://utube-box.com/",
  "icons": {
    "128": "icons/128x128.png"
  },
  "manifest_version": 2,
  "name": "UTube Box",
  "short_name": "UTube Box",
  "version": "1.0.2",
  "permissions": [
    "*://*.youtube.com/tv*",
    "webRequest",
    "webRequestBlocking"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}