electron/spec/fixtures/extensions/chrome-runtime/manifest.json

{
  "name": "chrome-runtime",
  "version": "1.0",
  "content_scripts": [
    {
      "matches": ["<all_urls>"],
      "js": ["main.js"],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": ["background.js"],
    "persistent": false
  },
  "manifest_version": 2
}