Examine source code of YouTube No Comments

{
  "manifest_version": 2,
  "name": "YouTube No Comments",
  "version": "0.6",
  "description": "YouTube without comments.",
  "icons": {
    "48": "icons/logo48.png",
    "96": "icons/logo96.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "*://*.youtube.com/*"
  ],
  "background": {
    "scripts": [
      "background-script.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/logo16_on.png",
      "32": "icons/logo32_on.png"
    },
    "default_title": "YouTube No Comments"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "youtubenocomments@elektrikis.id.lv",
      "strict_min_version": "68.0"
    }
  },
  "content_scripts": [
    {
      "all_frames": false,
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ]
}