Examine source code of WhilstBeGone

{
  "description": "Whilst: Be Gone!",
  "manifest_version": 2,
  "name": "WhilstBeGone",
  "version": "1.1resigned1",
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "while.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2bd79b3b-1b5e-4912-bd97-e6d2a3e95575}"
    }
  }
}