Examine source code of powerful search eBay

{
  "manifest_version": 2,
  "name": "eBay Extension",
  "version": "1.0",
  "description": "Quick access to eBay search and deals.",
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/icon-48.png",
    "default_title": "eBay Extension",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icons/icon-48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e4492f3c-1a59-4f5f-889d-ad89931a689c}"
    }
  }
}