chromium/chrome/test/data/extensions/api_test/stubs/manifest.json

{
  "name": "Content Script Extension API Stubs Test",
  "version": "1.0",
  "manifest_version": 2,
  "background": {
    "scripts": ["background.js"]
  },
  "content_scripts": [
    {
      "matches": ["http://*/*"],
      "js":["content_script.js"]
    }
  ]
}