Examine source code of Linkedin Messaging Boost

{
  "name": "Linkedin-Mod",
  "version": "0.0.3",
  "description": "Used to alter the CSS behind LinkedIn for things that don't feel right",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "*://*.linkedin.com/*"
      ],
      "css": [
        "messaging.css"
      ]
    }
  ]
}