chromium/chrome/test/data/extensions/xhr_from_content_script/manifest.json

{
  "name": "XHR from content script",
  "description": "An extension that sends XHRs from a content script.",
  "version": "0.1",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": ["http://127.0.0.1/title1.html"],
      "js": ["content_script.js"]
    }
  ]
}