Examine source code of YouTube Full Names

{
  "manifest_version": 2,
  "name": "YouTube Full Names",
  "version": "0.69",
  "icons": {
    "16": "16.png",
    "24": "24.png",
    "32": "32.png",
    "64": "64.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "css": [
        "style.css"
      ]
    }
  ]
}