Examine source code of Ebay Shipping Display

{
  "manifest_version": 2,
  "name": "Ebay Ship Time",
  "version": "1.0",
  "description": "Display ship time for items on search page",
  "icons": {
    "48": "icons/ship_time-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.ebay.com/sch/*"
      ],
      "js": [
        "ship_time.js"
      ]
    }
  ]
}