Examine source code of File Launcher Extension

{
  "manifest_version": 2,
  "name": "File Launcher Extension",
  "version": "1.0.3",
  "description": "这是一个用于启动本地文件的浏览器扩展。",
  "permissions": [
    "nativeMessaging",
    "activeTab",
    "tabs",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "http://localhost/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "externally_connectable": {
    "matches": [
      "http://localhost/*"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "ggboy@ggboy.com",
      "strict_min_version": "89.0"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}