Examine source code of Proxy for MegaPeer

{
  "manifest_version": 2,
  "name": "Proxy for MegaPeer",
  "version": "1.11",
  "description": "Прокси-сервер для MegaPeer и связанных сайтов",
  "permissions": [
    "proxy",
    "storage",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "megapeer911@gmail.com",
      "strict_min_version": "91.1.0"
    }
  }
}