Examine source code of Price Tracker V2

{
  "manifest_version": 2,
  "name": "Price Tracker V2",
  "version": "1.3",
  "description": "Track product prices and get notified when they drop.",
  "permissions": [
    "storage",
    "tabs",
    "notifications",
    "alarms",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": "icons/logo_64.png",
    "default_popup": "popup.html",
    "default_title": "Price Tracker"
  },
  "icons": {
    "32": "icons/logo_32.png",
    "64": "icons/logo_64.png",
    "128": "icons/logo_128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{453eab94-8b02-4de9-afd8-41eaa2bee3f9}"
    }
  }
}