{
  "name": "mDNS Browser",
  "description": "Browses mDNS services on the local network",
  "manifest_version": 2,
  "version": "0.4",
  "app": {
    "background": {
      "scripts": ["background.js"]
    }
  },
  "permissions": [
    "socket"
  ],
  "icons": { "128": "img/icon-128.png", "16": "img/icon-16.png" }
}

{
  "name": "mDNS Browser",
  "description": "Browses mDNS services on the local network",
  "manifest_version": 2,
  "version": "0.4",
  "app": {
    "background": {
      "scripts": ["background.js"]
    }
  },
  "permissions": [
    {
      "socket": [
        "udp-bind",
        "udp-send-to"
      ]
    }
  ],
  "icons": { "128": "img/icon-128.png", "16": "img/icon-16.png" }
}

Update socket permissions for mdns-browser sample
Update socket permissions for mdns-browser sample