build: run tree benchmark tests with bazel (#28568)

PR Close #28568

modules/benchmarks/start-server.js

@@ -0,0 +1,18 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+const protractorUtils = require('@angular/bazel/protractor-utils');
+const protractor = require('protractor');
+
+module.exports = async function(config) {
+  const {port} = await protractorUtils.runServer(config.workspace, config.server, '-port', []);
+  const processedConfig = await protractor.browser.getProcessedConfig();
+  const serverUrl = `http://localhost:${port}`;
+
+  return processedConfig.baseUrl = protractor.browser.baseUrl = serverUrl;
+};