Examine source code of YouTube Hide Description

{
  "manifest_version": 2,
  "name": "YouTube Hide Description",
  "version": "1.0",
  "description": "This extension hides the description section on YouTube.",
  "author": "Stellar",
  "permissions": [
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_title": "YouTube Hide Description",
    "default_icon": {
      "16": "icon-16.png",
      "32": "icon-32.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a29a4e4a-12a6-459d-9a30-ba18284e1cea}"
    }
  }
}