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diff --git a/remote/test/puppeteer/examples/custom-event.js b/remote/test/puppeteer/examples/custom-event.js
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+++ b/remote/test/puppeteer/examples/custom-event.js
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+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+
+const puppeteer = require('puppeteer');
+
+(async () => {
+  const browser = await puppeteer.launch();
+  const page = await browser.newPage();
+
+  // Define a window.onCustomEvent function on the page.
+  await page.exposeFunction('onCustomEvent', (e) => {
+    console.log(`${e.type} fired`, e.detail || '');
+  });
+
+  /**
+   * Attach an event listener to page to capture a custom event on page load/navigation.
+   * @param {string} type Event name.
+   * @returns {!Promise}
+   */
+  function listenFor(type) {
+    return page.evaluateOnNewDocument((type) => {
+      document.addEventListener(type, (e) => {
+        window.onCustomEvent({ type, detail: e.detail });
+      });
+    }, type);
+  }
+
+  await listenFor('app-ready'); // Listen for "app-ready" custom event on page load.
+
+  await page.goto('https://www.chromestatus.com/features', {
+    waitUntil: 'networkidle0',
+  });
+
+  await browser.close();
+})();