Fix "2nd print fails on Mac sometimes" bug.

chrome/browser/resources/print_preview/print_preview.js

 // Copyright (c) 2011 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.
 
 // require: cr/ui/print_preview_cloud.js
 
 var localStrings = new LocalStrings();
 
 // If useCloudPrint is true we attempt to connect to cloud print
 // and populate the list of printers with cloud print printers.
@@ skipping 443 matching lines @@
 function cancelPendingPrintRequest() {
   chrome.send('cancelPendingPrintRequest');
 }
 
 /**
  * Sends a message to initiate print workflow.
  */
 function sendPrintDocumentRequest() {
   var printerList = $('printer-list');
   var printer = printerList[printerList.selectedIndex];
-  chrome.send('saveLastPrinter', [printer.textContent,
-                                  cloudprint.getData(printer)]);
+  chrome.send('saveLastPrinter', [printer.value, cloudprint.getData(printer)]);
   chrome.send('print', [JSON.stringify(getSettings()),
                         cloudprint.getPrintTicketJSON(printer)]);
 }
 
 /**
  * Asks the browser to generate a preview PDF based on current print settings.
  */
 function requestPrintPreview() {
   hasPendingPreviewRequest = true;
   layoutSettings.updateState();
@@ skipping 510 matching lines @@
 <include src="print_preview_animations.js"/>
 <include src="print_preview_cloud.js"/>
 <include src="print_preview_utils.js"/>
 <include src="print_header.js"/>
 <include src="page_settings.js"/>
 <include src="copies_settings.js"/>
 <include src="header_footer_settings.js"/>
 <include src="layout_settings.js"/>
 <include src="color_settings.js"/>
 <include src="margin_settings.js"/>