Examine source code of Simple YT Ad Blocker

{
  "manifest_version": 2,
  "name": "Simple YT Ad Blocker",
  "version": "1.0",
  "description": "Automatically skips YouTube ads.",
  "icons": {
    "48": "icon.png"
  },
  "permissions": [
    "tabs",
    "webNavigation",
    "*://www.youtube.com/*",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5d4287ef-49ea-4ce3-afaa-103325f2237a}"
    }
  }
}