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

{
  "name": "Manifest for ML Test Metrics",
  "screenshots": [
    {
      "src": "screenshot1-portrait.jpeg",
      "type": "image/jpeg",
      "sizes": "409x728",
      "form_factor": "narrow",
      "label": "a narrow screenshot"
    }
  ],
  "icons": [
     {
       "src": "launcher-icon-1x.png",
       "sizes": "48x48",
       "type": "image/png"
     },
     {
       "src": "launcher-icon-1-5x.png",
       "sizes": "72x72",
       "type": "image/png"
     },
     {
       "src": "launcher-icon-2x.png",
       "sizes": "96x96",
       "type": "image/png",
       "purpose": "any"
     },
     {
       "src": "launcher-icon-4x.png",
       "sizes": "192x192",
       "type": "image/png",
       "purpose": "maskable"
     }
  ],
  "start_url": "test_page_for_ml_promotion.html",
  "display": "browser",
  "orientation": "landscape",
  "background_color": "red",
  "theme_color": "blue"
}