MD Settings: Search page, switching paper-dropdown-menu to native select.

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 25 matching lines @@
     this.browserProxy_.getSearchEnginesList().then(updateSearchEngines);
     cr.addWebUIListener('search-engines-changed', updateSearchEngines);
   },
 
   /** @private */
   onManageSearchEnginesTap_: function() {
     settings.navigateTo(settings.Route.SEARCH_ENGINES);
   },
 
   /** @private */
-  onIronSelect_: function() {
-    var searchEngine = this.searchEngines_[this.$$('paper-listbox').selected];
-    if (searchEngine.default) {
-      // If the selected search engine is already marked as the default one,
-      // this change originated in some other tab, and nothing should be done
-      // here.
-      return;
-    }
-
-    // Otherwise, this change originated by an explicit user action in this tab.
-    // Submit the default search engine change.
+  onChange_: function(e) {
+    var select = /** @type {!HTMLSelectElement} */ (this.$$('select'));
+    var searchEngine = this.searchEngines_[select.selectedIndex];
     this.browserProxy_.setDefaultSearchEngine(searchEngine.modelIndex);
   },
-
-  /**
-   * @return {number}
-   * @private
-   */
-  getSelectedSearchEngineIndex_: function() {
-    return this.searchEngines_.findIndex(function(searchEngine) {
-      return searchEngine.default;
-    });
-  },
 });