chromium/chrome/test/data/extensions/api_test/executescript/frame_id/manifest.json

{
  "version": "1",
  "manifest_version": 2,
  "name": "executeScript / insertCSS test by frameId",
  "background": {
    "scripts": ["test.js"],
    "persistent": true
  },
  "permissions": ["webNavigation", "tabs", "http://a.com/"]
}