Examine source code of Zenity

{
  "manifest_version": 2,
  "name": "Zenity",
  "version": "0.3.0",
  "description": "Remove annoying parts of websites. Regain your zenity in one click.",
  "icons": {
    "48": "icons/zenity-48.png",
    "96": "icons/zenity-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}