Examine source code of Disallow console.clear()

{
  "manifest_version": 2,
  "name": "Disallow console.clear",
  "version": "1.2.2resigned1",
  "description": "Disallows use of the console.clear() function on all websites.",
  "author": "timmyRS",
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{627c4722-2bc4-4abc-aefc-441b117bb86f}"
    }
  }
}