Examine source code of eBay Tab Fixer

{
  "manifest_version": 2,
  "name": "eBay Tab Fixer",
  "version": "1.0",
  "description": "Prevent eBay from opening links in new tabs. Enjoy a smoother browsing experience with all clicks opening in the same tab",
  "content_scripts": [
    {
      "matches": [
        "*://*.ebay.com/sch/*"
      ],
      "js": [
        "nonewtab.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d50373ab-0624-47a8-84ef-c5c15ad176b9}"
    }
  }
}