Spectator

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Spectator",
  "description": "This extension is part of Spectator's agent.",
  "version": "1.2",
  "permissions": [
    "tabs",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "spectator.js"
    ]
  }
}