Examine source code of DzenAdBlocker

{
  "manifest_version": 2,
  "name": "DzenAdBlocker",
  "version": "1.0",
  "description": "Удаление рекламы с dzen.ru",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.dzen.ru/*"
      ],
      "js": [
        "DzenAdBlocker.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "permissions": [
    "scripting",
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{67175bc3-4c77-47b7-b0a1-02c5581f4433}"
    }
  }
}