Examine source code of No Tabs

{
  "manifest_version": 2,
  "name": "No Tabs",
  "author": "adsum",
  "version": "1.2resigned1",
  "description": "Disable tabs completely, by always opening a new window instead.",
  "icons": {
    "2000": "notabs.png"
  },
  "permissions": [
    "tabs"
  ],
  "background": {
    "scripts": [
      "notabs.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c9f848fb-3fb6-4390-9fc1-e4dd4d1c5122}"
    }
  }
}