Examine source code of ProxyControl

{
  "name": "ProxyControl",
  "version": "1.4.2",
  "default_locale": "en",
  "description": "Manage setting of connect of proxy in your browser so quickly and so easily as you want.",
  "permissions": [
    "proxy",
    "storage",
    "unlimitedStorage",
    "<all_urls>",
    "webRequest",
    "webRequestBlocking"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "91.1.0",
      "id": "{b07bbeb5-4333-42f1-a66a-b4028fa70071}"
    }
  },
  "background": {
    "scripts": [
      "scripts/background.js",
      "scripts/functions.js"
    ]
  },
  "browser_action": {
    "default_title": "Настройка прокси",
    "default_icon": "icons/off.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icons/16x16.png",
    "48": "icons/48x48.png",
    "128": "icons/128x128.png"
  },
  "manifest_version": 2
}