[MD History] Copy stats from the old history page.

chrome/test/data/webui/md_history/test_util.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.
 
 /*
  * Waits for queued up tasks to finish before proceeding. Inspired by:
  * https://github.com/Polymer/web-component-tester/blob/master/browser/environment/helpers.js#L97
  */
 function flush() {
   Polymer.dom.flush();
@@ skipping 19 matching lines @@
   body.appendChild(element);
 }
 
 /**
  * Replace the document body with a new instance of <history-app>.
  * @return {HistoryAppElement} The app which was created.
  */
 function replaceApp() {
   var app = document.createElement('history-app');
   app.id = 'history-app';
+  // Disable querying for tests by default.
+  app.queryState_.queryingDisabled = true;
   replaceBody(app);
   return app;
 }
 
 /**
  * Create a fake history result with the given timestamp.
  * @param {number|string} timestamp Timestamp of the entry, as a number in ms or
  * a string which can be parsed by Date.parse().
  * @param {string} urlStr The URL to set on this entry.
  * @return {!HistoryEntry} An object representing a history entry.
@@ skipping 98 matching lines @@
     clientX: xy.x,
     clientY: xy.y,
     buttons: 1,
     shiftKey: true,
   };
 
   element.dispatchEvent(new MouseEvent('mousedown', props));
   element.dispatchEvent(new MouseEvent('mouseup', props));
   element.dispatchEvent(new MouseEvent('click', props));
 }
+
+function disableLinkClicks() {
+  document.addEventListener('click', function(e) {
+    if (e.defaultPrevented)
+      return;
+
+    var eventPath = e.path;
+    var anchor = null;
+    if (eventPath) {
+      for (var i = 0; i < eventPath.length; i++) {
+        var element = eventPath[i];
+        if (element.tagName === 'A' && element.href) {
+          anchor = element;
+          break;
+        }
+      }
+    }
+
+    if (!anchor)
+      return;
+
+    e.preventDefault();
+  });
+}
+
+function createSession(name, windows) {
+  return {
+    collapsed: false,
+    deviceType: '',
+    name: name,
+    modifiedTime: '2 seconds ago',
+    tag: name,
+    timestamp: 0,
+    windows: windows
+  };
+}
+
+function createWindow(tabUrls) {
+  var tabs = tabUrls.map(function(tabUrl) {
+    return {sessionId: 456, timestamp: 0, title: tabUrl, url: tabUrl};
+  });
+
+  return {
+    tabs: tabs,
+    sessionId: '123',
+    userVisibleTimestamp: "A while ago"
+  };
+}