Revert 137558 - Revert 136935 - Sometimes data is NULL. I am not sure if it's correct behavior , bu…

chrome/browser/ui/webui/print_preview/print_preview_handler.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_HANDLER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 158 matching lines @@
   // Activates the initiator tab and close the preview tab.
   void ActivateInitiatorTabAndClosePreviewTab();
 
   // Adds all the recorded stats taken so far to histogram counts.
   void ReportStats();
 
   // Clears initiator tab details for this preview tab.
   void ClearInitiatorTabDetails();
 
   // Posts a task to save |data| to pdf at |print_to_pdf_path_|.
-  void PostPrintToPdfTask(scoped_refptr<base::RefCountedBytes> data);
+  void PostPrintToPdfTask(base::RefCountedBytes* data);
 
   // Populates |settings| according to the current locale.
   void GetNumberFormatAndMeasurementSystem(base::DictionaryValue* settings);
 
   static printing::StickySettings* GetStickySettings();
 
   // Pointer to current print system.
   scoped_refptr<printing::PrintBackend> print_backend_;
 
   // The underlying dialog object.
@@ skipping 13 matching lines @@
   bool has_logged_printers_count_;
 
   // Holds the path to the print to pdf request. It is empty if no such request
   // exists.
   scoped_ptr<FilePath> print_to_pdf_path_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintPreviewHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_HANDLER_H_