[MD History] Add routing to the synced devices page.

chrome/browser/resources/md_history/side_bar.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.
 
 Polymer({
   is: 'history-side-bar',
 
   properties: {
     selectedPage: {
       type: String,
@@ skipping 17 matching lines @@
     this.$.menu.selectedItem.focus();
   },
 
   /** @private */
   onSelectorActivate_: function() {
     this.$.drawer.close();
   },
 
   /**
    * Relocates the user to the clear browsing data section of the settings page.
+   * @param {Event} e
    * @private
    */
-  onClearBrowsingDataTap_: function() {
+  onClearBrowsingDataTap_: function(e) {
     md_history.BrowserService.getInstance().openClearBrowsingData();
+    e.preventDefault();
   },
 });