Examine source code of Flight Price Tracker

{
  "manifest_version": 2,
  "name": "Flight Price Tracker",
  "version": "1.0",
  "description": "Utility to track airfare prices and notify when cheap tickets are available.",
  "permissions": [
    "alarms",
    "notifications",
    "storage",
    "activeTab",
    "https://api.exampleflightprices.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "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": "{e9827f1c-44dc-4dcc-b463-a97817639c0f}"
    }
  }
}