Examine source code of Real-Time Traffic Tracker

{
  "manifest_version": 2,
  "name": "Real-Time Traffic Tracker",
  "version": "0.3",
  "description": "Track real-time traffic conditions and receive notifications for your location.",
  "permissions": [
    "storage",
    "alarms",
    "notifications",
    "geolocation"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "32": "icons/logo_32.png",
      "64": "icons/logo_64.png",
      "128": "icons/logo_128.png"
    }
  },
  "icons": {
    "32": "icons/logo_32.png",
    "64": "icons/logo_64.png",
    "128": "icons/logo_128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{89678838-0b8a-48d9-81f1-cdf2e2fca691}"
    }
  }
}