Examine source code of VonClownstick

{
  "manifest_version": 2,
  "name": "vonClownstick",
  "version": "1.1",
  "description": "Changes Donald Trump's name to Fuckface von Clownstick in all instances",
  "icons": {
    "48": "vonClownstickIcon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "vonClownstick.js"
      ]
    }
  ]
}