如何检测URL是否在Chrome中打开？

var isChrome = /Chrome/.test(navigator.userAgent);
var isOpenInChrome = isChrome && window.location.protocol === 'chrome:';

var http = require('http');

var server = http.createServer(function(req, res) {
  var userAgent = req.headers['user-agent'];
  var isChrome = /Chrome/.test(userAgent);
  
  if (isChrome) {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    res.end('URL is opened in Chrome.');
  } else {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    res.end('URL is not opened in Chrome.');
  }
});

server.listen(8080, 'localhost');

{
  "name": "URL Checker",
  "version": "1.0",
  "manifest_version": 3,
  "background": {
    "service_worker": "background.js"
  },
  "permissions": [
    "tabs"
  ],
  "action": {
    "default_popup": "popup.html"
  }
}

chrome.runtime.onInstalled.addListener(function() {
  chrome.tabs.query({active: true, currentWindow: true}, function(tabs) {
    var currentTab = tabs[0];
    var isChrome = currentTab && currentTab.url.startsWith('chrome:');
    
    if (isChrome) {
      // TODO: URL is opened in Chrome
    } else {
      // TODO: URL is not opened in Chrome
    }
  });
});