chromium/chrome/test/data/banners/manifest_no_type_caps.json

{
  "name": "Manifest test app with no type in icons",
  "icons": [
    {
      "src": "launcher-icon-1x.png",
      "sizes": "48x48"
    },
    {
      "src": "launcher-icon-1-5x.png",
      "sizes": "72x72"
    },
    {
      "src": "launcher-icon-2x.png",
      "sizes": "96x96"
    },
    {
      "src": "launcher-icon-3x-upper.PNG",
      "sizes": "144x144"
    },
    {
      "src": "launcher-icon-4x.png",
      "sizes": "192x192",
      "type": "image/png"
    }
  ],
  "start_url": "manifest_test_page.html",
  "display": "standalone",
  "orientation": "landscape"
}