MD WebUI: Make cr-lazy-render get() synchronous

chrome/browser/resources/md_history/history_toolbar.js

 // Copyright 2015 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.
 
 Polymer({
   is: 'history-toolbar',
   properties: {
     // Number of history items currently selected.
     // TODO(calamity): bind this to
     // listContainer.selectedItem.selectedPaths.length.
@@ skipping 82 matching lines @@
   /**
    * @param {!CustomEvent} event
    * @private
    */
   onSearchChanged_: function(event) {
     this.searchTerm = /** @type {string} */ (event.detail);
   },
 
   /** @private */
   onInfoButtonTap_: function() {
-    this.$.syncNotice.get().then(function(dropdown) {
-      dropdown.positionTarget = this.$$('#info-button-icon');
-      // It is possible for this listener to trigger while the dialog is
-      // closing. Ensure the dialog is fully closed before reopening it.
-      if (dropdown.style.display == 'none')
-        dropdown.open();
-    }.bind(this));
+    var dropdown = this.$.syncNotice.get();
+    dropdown.positionTarget = this.$$('#info-button-icon');
+    // It is possible for this listener to trigger while the dialog is
+    // closing. Ensure the dialog is fully closed before reopening it.
+    if (dropdown.style.display == 'none')
+      dropdown.open();
   },
 
   onClearSelectionTap_: function() {
     this.fire('unselect-all');
   },
 
   onDeleteTap_: function() {
     this.fire('delete-selected');
   },
 
@@ skipping 23 matching lines @@
     // TODO(calamity): Fix the format of these dates.
     return loadTimeData.getStringF(
       'historyInterval', queryStartTime, queryEndTime);
   },
 
   /** @private */
   hasDrawerChanged_: function() {
     this.updateStyles();
   },
 });