Examine source code of MeetSoup

{
  "manifest_version": 2,
  "name": "MeetSoup",
  "version": "1.0.0.1",
  "description": "Herramientas para meet",
  "homepage_url": "https://github.com/ndazeo/meetsoup",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "permissions": [
    "activeTab",
    "notifications"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://meet.google.com/*"
      ],
      "js": [
        "inject.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}