Chrome Web App Unread Count Badge

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Chrome Web App Unread Count Badge",
  "version": "2.0.2",
  "manifest_version": 3,
  "description": "Unread count badge for Chrome Web App",
  "homepage_url": "https://github.com/luisliuchao/chrome-web-app-unread-count-badge",
  "icons": {
    "16": "icons/icon_16.png",
    "32": "icons/icon_32.png",
    "128": "icons/icon_128.png"
  },
  "host_permissions": [
    "*://*/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "src/content.js"
      ]
    }
  ]
}