Examine source code of Bonobo for eBay

{
  "name": "Bonobo",
  "version": "1.1",
  "description": "An eBay BIN/OBO best offer reveal tool.",
  "manifest_version": 2,
  "icons": {
    "64": "monkey.png"
  },
  "permissions": [
    "https://*.ebay.com/*",
    "https://*.ebay.com.au/*",
    "https://*.ebay.at/*",
    "https://*.ebay.be/*",
    "https://*.ebay.ca/*",
    "https://*.ebay.cn/*",
    "https://*.ebay.fr/*",
    "https://*.ebay.de/*",
    "https://*.ebay.com.hk/*",
    "https://*.ebay.in/*",
    "https://*.ebay.ie/*",
    "https://*.ebay.it/*",
    "https://*.ebay.co.jp/*",
    "https://*.ebay.com.my/*",
    "https://*.ebay.nl/*",
    "https://*.ebay.ph/*",
    "https://*.ebay.pl/*",
    "https://*.ebay.com.sg/*",
    "https://*.ebay.es/*",
    "https://*.ebay.se/*",
    "https://*.ebay.ch/*",
    "https://*.ebay.com.tw/*",
    "https://*.ebay.co.th/*",
    "https://*.ebay.co.uk/*",
    "https://*.ebay.vn/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.ebay.com/*",
        "https://*.ebay.com.au/*",
        "https://*.ebay.at/*",
        "https://*.ebay.be/*",
        "https://*.ebay.ca/*",
        "https://*.ebay.cn/*",
        "https://*.ebay.fr/*",
        "https://*.ebay.de/*",
        "https://*.ebay.com.hk/*",
        "https://*.ebay.in/*",
        "https://*.ebay.ie/*",
        "https://*.ebay.it/*",
        "https://*.ebay.co.jp/*",
        "https://*.ebay.com.my/*",
        "https://*.ebay.nl/*",
        "https://*.ebay.ph/*",
        "https://*.ebay.pl/*",
        "https://*.ebay.com.sg/*",
        "https://*.ebay.es/*",
        "https://*.ebay.se/*",
        "https://*.ebay.ch/*",
        "https://*.ebay.com.tw/*",
        "https://*.ebay.co.th/*",
        "https://*.ebay.co.uk/*",
        "https://*.ebay.vn/*"
      ],
      "css": [
        "bonobo.css"
      ],
      "js": [
        "bonobo.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "monkey.png"
  ]
}