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

{
  "name": "test",
  "manifest_version": 2,
  "version": "1",
  "content_scripts": [
    {
      "matches": ["http://*.no.port.okay/path/*"],
      "js": ["javascript.js"]
    },
    {
      "matches": ["http://*.has.port.error:12345/path/*"],
      "js": ["javascript.js"]
    }
  ]
}