Examine source code of GeForce NOW Unlocker

{
  "manifest_version": 2,
  "name": "GeForce NOW Unlocker",
  "version": "0.3.1",
  "description": "Allow the usage of the GeForce NOW web app on unsupported operating systems.",
  "author": "Lorenzo Murarotto <lnzmrr@gmail.com>",
  "homepage_url": "https://github.com/murar8/gfn-unlocker",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    },
    "default_title": "GeForce NOW Unlocker",
    "default_popup": "popup.html"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "https://play.geforcenow.com/*"
  ]
}