Convert Print Preview layout and color radio buttons to select elements.

chrome/browser/resources/print_preview/print_preview.js

 // Copyright (c) 2012 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.
 
 // TODO(rltoscano): Move data/* into print_preview.data namespace
 
 var localStrings = new LocalStrings(templateData);
 
 <include src="component.js"/>
 <include src="print_preview_focus_manager.js"/>
@@ skipping 1010 matching lines @@
     },
 
     /**
      * Called by onManipulateSettingsForTest_(). Sets the layout settings to
      * either portrait or landscape.
      * @param {boolean} portrait Whether to use portrait page layout;
      *     if false: landscape.
      * @private
      */
     setLayoutSettingsForTest_: function(portrait) {
-      var element = document.querySelector(portrait ?
-          '.layout-settings-portrait-radio' :
-          '.layout-settings-landscape-radio');
-      if (element.checked)
+      var combobox = document.querySelector('.layout-settings-select');
+      if (combobox.value == 'portrait') {
         this.nativeLayer_.previewReadyForTest();
-      else
-        element.click();
+      } else {
+        combobox.value = 'landscape';
+        this.layoutSettings_.onSelectChange_();
+      }
     },
 
     /**
      * Called by onManipulateSettingsForTest_(). Sets the page range for
      * for the print preview settings.
      * @param {string} pageRange Sets the page range to the desired value(s).
      *     Ex: "1-5,9" means pages 1 through 5 and page 9 will be printed.
      * @private
      */
     setPageRangeForTest_: function(pageRange) {
@@ skipping 229 matching lines @@
 <include src="search/cloud_destination_list.js"/>
 <include src="search/recent_destination_list.js"/>
 <include src="search/destination_list_item.js"/>
 <include src="search/destination_search.js"/>
 <include src="search/fedex_tos.js"/>
 
 window.addEventListener('DOMContentLoaded', function() {
   printPreview = new print_preview.PrintPreview();
   printPreview.initialize();
 });