Examine source code of Hide Youtube Comments

{
  "manifest_version": 2,
  "name": "Hide Youtube Comments",
  "version": "1.1",
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/watch*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "options_page": "index.html",
  "icons": {
    "16": "469516.png",
    "48": "469516.png",
    "128": "469516.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a9911df6-5836-419b-9a32-f2a4727f5e34}"
    }
  }
}