Examine source code of Channel Filter

{
  "manifest_version": 2,
  "name": "Channel Filter",
  "version": "0.0.1",
  "description": "Filter YouTube channels from search",
  "icons": {
    "48": "icons/border-48.png"
  },
  "options_ui": {
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "script.js"
      ],
      "css": [
        "style.css"
      ]
    }
  ],
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9d51f749-9991-456a-b3fd-bf3608d0e4e9}"
    }
  }
}