Fix the print preview regression bug caused by r98926.

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 886 matching lines @@
  *     this response.
  * @param {string} jobTitle The print job title
  */
 function onDidGetPreviewPageCount(pageCount, isModifiable, previewResponseId,
                                   jobTitle) {
   if (!isExpectedPreviewResponse(previewResponseId))
     return;
   pageSettings.updateState(pageCount);
   previewModifiable = isModifiable;
   document.title = localStrings.getStringF('printPreviewTitleFormat', jobTitle);
+  if (!previewModifiable && pageSettings.requestPrintPreviewIfNeeded())
+    return;
+
   cr.dispatchSimpleEvent(document, 'updateSummary');
 }
 
 function onDidGetDefaultPageLayout(pageLayout) {
   // TODO(aayushkumar): Do something here!
 }
 
 /**
  * Called when no pipelining previewed pages.
  * @param {string} previewUid Preview unique identifier.
@@ skipping 168 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"/>