Examine source code of Proxy-solutions settings

{
  "manifest_version": 2,
  "name": "Proxy-solutions settings",
  "description": "PSs (Proxy-solutions settings) - это удобный инструмент для настройки и управления прокси в браузере.",
  "version": "1.3",
  "icons": {
    "128": "icon-128.png"
  },
  "background": {
    "scripts": [
      "/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "/content.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true,
    "browser_style": true
  },
  "browser_action": {
    "default_icon": "icon-34.png",
    "default_title": "Proxy-solutions settin",
    "default_popup": "popup.html",
    "browser_style": true
  },
  "permissions": [
    "browsingData",
    "proxy",
    "storage",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "downloads",
    "notifications",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "91.1.0",
      "id": "{5eed4068-9fdf-4813-9e20-7533e2e2c007}"
    }
  }
}