MD Settings: change outlinks to actually use <a>

chrome/browser/resources/settings/search_page/search_page.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.
 
 /**
  * @fileoverview
  * 'settings-search-page' is the settings page containing search settings.
  */
 Polymer({
   is: 'settings-search-page',
@@ skipping 148 matching lines @@
   getShowHotwordError_: function() {
     return this.hotwordInfo_.enabled && !!this.hotwordInfo_.errorMessage;
   },
 
   /** @private */
   onRetrainTap_: function() {
     // Re-enable hotword search enable; this will trigger the retrain UI.
     this.browserProxy_.setHotwordSearchEnabled(this.hotwordInfo_.enabled);
   },
 
-  /** @private */
-  onManageAudioHistoryTap_: function() {
-    window.open(loadTimeData.getString('manageAudioHistoryUrl'));
-  },
-
   /**
    * @param {Event} event
    * @private
    */
   doNothing_: function(event) {
     event.stopPropagation();
   }
 });