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 902 matching lines @@
 
 /**
  * Called when no pipelining previewed pages.
  * @param {string} previewUid Preview unique identifier.
  * @param {number} previewResponseId The preview request id that resulted in
  *     this response.
  */
 function reloadPreviewPages(previewUid, previewResponseId) {
   if (!isExpectedPreviewResponse(previewResponseId))
     return;
+
+  if (pageSettings.requestPrintPreviewIfNeeded())

[dpapad, 2011/09/01 21:20:53]

Repeating our in person discussion, it seems better to remove these 2 checks and
add a single check in onDidGetPreviewPageCount().

[kmadhusu, 2011/09/01 21:38:34]

Done.

+    return;
   hasPendingPreviewRequest = false;
 
   cr.dispatchSimpleEvent(document, 'updatePrintButton');
   hideLoadingAnimation();
   var pageSet = pageSettings.previouslySelectedPages;
   for (var i = 0; i < pageSet.length; i++)
     $('pdf-viewer').loadPreviewPage(getPageSrcURL(previewUid, pageSet[i]-1), i);
   // TODO(dpapad): handle pending print file requests.
 }
 
@@ skipping 36 matching lines @@
  * Create the PDF plugin as needed.
  * Called from PrintPreviewUI::PreviewDataIsAvailable().
  * @param {boolean} modifiable If the preview is modifiable.
  * @param {string} previewUid Preview unique identifier.
  * @param {number} previewResponseId The preview request id that resulted in
  *     this response.
  */
 function updatePrintPreview(previewUid, previewResponseId) {
   if (!isExpectedPreviewResponse(previewResponseId))
     return;
+
+  if (pageSettings.requestPrintPreviewIfNeeded())
+    return;
+
   hasPendingPreviewRequest = false;
   hasPendingPrintReadyDocumentRequest = false;
 
   if (!previewModifiable) {
     // If the preview is not modifiable the plugin has not been created yet.
     currentPreviewUid = previewUid;
     createPDFPlugin(PRINT_READY_DATA_INDEX);
   }
 
   cr.dispatchSimpleEvent(document, 'updatePrintButton');
@@ skipping 96 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"/>