Added the chrome://safe-browsing/ page as part of the chrome://about

chrome/browser/resources/safe_browsing/safe_browsing.js

+/* Copyright 2017 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file. */
+
+cr.define('safe_browsing', function() {
+  'use strict';
+
+  /**
+   * Translate the message on loading the page.
+   */
+  function initialize() {
+    $('sb-under-construction-message').textContent = loadTimeData.getStringF(
+      'sbUnderConstructionMessage');
+  }
+
+  return {
+    initialize: initialize,
+  };
+});
+
+document.addEventListener('DOMContentLoaded', safe_browsing.initialize);