chromium/chrome/test/data/web_app_notifications/manifest.json

{
  "name": "Web App Notifications Test",
  "short_name": "Notifications Test",
  "description": "A Web App That Uses The Notifications API",
  "icons": [
    {
      "src": "yellow-32.png",
      "sizes": "32x32",
      "type": "image/png",
      "purpose": "any"
    },
    {
      "src": "monochrome-32.png",
      "sizes": "32x32",
      "type": "image/png",
      "purpose": "monochrome"
    }
  ],
  "start_url": "index.html",
  "display": "minimal-ui",
  "theme_color": "#FF0000",
  "background_color": "#FFFFFF"
}