MD WebUI: Pull 'X selected' toolbar overlay from History into shared element

chrome/test/data/webui/md_history/history_metrics_test.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.
 
 /**
  * @constructor
  * @extends {md_history.BrowserService}
  */
 var TestMetricsBrowserService = function() {
   this.histogramMap = {};
@@ skipping 98 matching lines @@
     }).then(() => {
       items = polymerSelectAll(app.$.history, 'history-item');
       MockInteractions.tap(items[0].$.title);
       assertEquals(1, actionMap['SearchResultClick']);
       assertEquals(1, histogramMap['HistoryPage.ClickPosition'][0]);
       assertEquals(1, histogramMap['HistoryPage.ClickPositionSubset'][0]);
       MockInteractions.tap(items[0].$.checkbox);
       MockInteractions.tap(items[4].$.checkbox);
       return PolymerTest.flushTasks();
     }).then(() => {
-      MockInteractions.tap(app.$.toolbar.$$('#delete-button'));
+      app.$.toolbar.deleteSelectedItems();
       assertEquals(1, actionMap['RemoveSelected']);
       return PolymerTest.flushTasks();
     }).then(() => {
       MockInteractions.tap(app.$.history.$$('.cancel-button'));
       assertEquals(1, actionMap['CancelRemoveSelected']);
-      MockInteractions.tap(app.$.toolbar.$$('#delete-button'));
+      app.$.toolbar.deleteSelectedItems();
       return PolymerTest.flushTasks();
     }).then(() => {
       MockInteractions.tap(app.$.history.$$('.action-button'));
       assertEquals(1, actionMap['ConfirmRemoveSelected']);
       return PolymerTest.flushTasks();
     }).then(() => {
       items = polymerSelectAll(app.$.history, 'history-item');
       MockInteractions.tap(items[0].$['menu-button']);
       return PolymerTest.flushTasks();
     }).then(() => {
@@ skipping 49 matching lines @@
       assertEquals(1, histogram[SyncedTabsHistogram.OPEN_ALL]);
 
       MockInteractions.tap(menuButton);
       return PolymerTest.flushTasks();
     }).then(() => {
       MockInteractions.tap(app.$$('#synced-devices').$$('#menuDeleteButton'));
       assertEquals(1, histogram[SyncedTabsHistogram.HIDE_FOR_NOW]);
     });
   });
 });