Examine source code of Exam Environment

{
  "browser_specific_settings": {
    "gecko": {
      "id": "nikhilthakur@examonline.com"
    }
  },
  "manifest_version": 3,
  "name": "Exam Environment",
  "version": "1.0",
  "permissions": [
    "management",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html"
  },
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ]
}