chromium/chrome/test/data/extensions/manifest_tests/web_urls_has_port.json

{
  "name": "test",
  "manifest_version": 2,
  "version": "1",
  "app": {
    "urls": [
      "http://www.google.com/mail/",
      "http://www.google.com:12345/foobar/"
    ],
    "launch": {
      "web_url": "http://www.google.com/mail/"
    }
  },
  "permissions": [
    "notifications"
  ]
}