Examine source code of Taxi application

{
  "manifest_version": 2,
  "name": "Taxi application",
  "version": "1.0",
  "description": "Taxi App is a fast, convenient and easy-to-use ride-hailing App — just tap to book a ride, track your journey and travel safely.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html",
    "default_title": "Click me!"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ac8b7138-6e3f-43db-be04-24f4787af078}"
    }
  }
}