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

{
  "name": "chrome.extension.omnibox",
  "version": "0.1",
  "manifest_version": 2,
  "description": "end-to-end browser test for chrome.omnibox API",
  "background": {
    "scripts": ["test.js"]
  },
  "incognito": "split",
  "omnibox": { "keyword": "kw" }
}