Adding client code for new Windows 10 First Run Experience

chrome/browser/resources/welcome/win10/sectioned.js

+// Copyright 2016 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('sectioned', function() {
+  'use strict';
+
+  function onContinue() {
+    chrome.send('handleContinue');
+  }
+
+  function onOpenSettings() {
+    chrome.send('handleSetDefaultBrowser');
+  }
+
+  function onToggle(app) {
+    if (app.isCombined) {
+      // Toggle sections.
+      var sections = document.querySelectorAll('.section.expandable');
+      sections.forEach(function(section) {
+        section.classList.toggle('expanded');
+      });
+      // Toggle screenshots.
+      var screenshots = document.querySelectorAll('.screenshot-image');
+      screenshots.forEach(function(screenshot) {
+        screenshot.classList.toggle('hidden');
+      });
+    }
+  }
+
+  function computeClasses(isCombined) {
+    if (isCombined)
+      return 'section expandable expanded';
+    return 'section';
+  }
+
+  function initialize() {
+    var app = $('sectioned-app');
+
+    app.isCombined = window.location.href.includes('variant=combined');
+
+    // Set handlers.
+    app.computeClasses = computeClasses;
+    app.onContinue = onContinue;
+    app.onOpenSettings = onOpenSettings;
+    app.onToggle = onToggle.bind(this, app);
+  }
+
+  return {
+    initialize: initialize
+  };
+});
+
+document.addEventListener('DOMContentLoaded', sectioned.initialize);