Examine source code of Tabs In Title

{
  "manifest_version": 2,
  "name": "Tabs In Title",
  "version": "1.6",
  "description": "Used in full-screen or kiosk mode with DWM to see tabs in title. And therefore in dwm bar.",
  "background": {
    "scripts": [
      "bg.js"
    ]
  },
  "icons": {
    "48": "48.png",
    "96": "96.png"
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6c098603-6e9a-48aa-9ae4-10d4fd666cc9}"
    }
  }
}