Examine source code of UnTrap - Block YouTube Distractions

{
  "manifest_version": 2,
  "default_locale": "en",
  "name": "__MSG_extension_name__",
  "description": "__MSG_extension_description__",
  "version": "1.0",
  "icons": {
    "48": "images/icon-48.png",
    "96": "images/icon-96.png",
    "128": "images/icon-128.png",
    "256": "images/icon-256.png",
    "512": "images/icon-512.png"
  },
  "background": {
    "scripts": [
      "js/app/background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "js": [
        "js/app/options.js",
        "js/app/helpers.js",
        "js/page/htmlAtrributesManager.js",
        "js/app/storageConstants.js",
        "js/page/scheduleBlockingPage.js",
        "js/page/content.js"
      ],
      "css": [
        "css/page/desktop.css",
        "css/page/mobile.css",
        "css/page/block.css"
      ],
      "matches": [
        "*://*.youtube.com/*"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/toolbar-icon-16.png",
      "19": "images/toolbar-icon-19.png",
      "32": "images/toolbar-icon-32.png",
      "38": "images/toolbar-icon-38.png",
      "48": "images/toolbar-icon-48.png",
      "72": "images/toolbar-icon-72.png"
    }
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f1d0180d-ff7c-4c76-93a8-d30b20952c88}"
    }
  }
}