gBay - eBay inside Gmail

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "gBay - eBay inside Gmail",
  "short_name": "gBay",
  "version": "0.0.3",
  "manifest_version": 2,
  "description": "Manage eBay inside Gmail",
  "permissions": [
    "tabs",
    "https://mail.google.com/*"
  ],
  "background": {
    "page": "background.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*"
      ],
      "js": [
        "jquery-2.2.2.min.js",
        "main.js"
      ],
      "run_at": "document_end"
    }
  ],
  "content_security_policy": "script-src 'self' https://www.google-analytics.com https://googleads.g.doubleclick.net https://www.googleadservices.com https://ssl.google-analytics.com https://clients5.google.com https://apis.google.com;object-src 'self'",
  "web_accessible_resources": [
    "images/ebay_link.png"
  ]
}