Use file handles to interact with utility process.

chrome/browser/printing/print_view_manager_base.h

 // Copyright 2013 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_PRINTING_PRINT_VIEW_MANAGER_BASE_H_
 #define CHROME_BROWSER_PRINTING_PRINT_VIEW_MANAGER_BASE_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/prefs/pref_member.h"
 #include "base/strings/string16.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 #include "printing/printed_pages_source.h"
 
 struct PrintHostMsg_DidPrintPage_Params;
 
 namespace content {
 class RenderViewHost;
 }
 
 namespace printing {
 
 class JobEventDetails;
 class MetafilePlayer;
-class PdfToEmfConverter;
 class PrintJob;
 class PrintJobWorkerOwner;
 class PrintQueriesQueue;
 
 // Base class for managing the print commands for a WebContents.
 class PrintViewManagerBase : public content::NotificationObserver,
                              public PrintedPagesSource,
                              public content::WebContentsObserver {
  public:
   virtual ~PrintViewManagerBase();
@@ skipping 89 matching lines @@
   bool RunInnerMessageLoop();
 
   // In the case of Scripted Printing, where the renderer is controlling the
   // control flow, print_job_ is initialized whenever possible. No-op is
   // print_job_ is initialized.
   bool OpportunisticallyCreatePrintJob(int cookie);
 
   // Release the PrinterQuery associated with our |cookie_|.
   void ReleasePrinterQuery();
 
-#if defined(OS_WIN)
-  // Called on completion of converting the pdf to emf.
-  void OnPdfToEmfConverted(const PrintHostMsg_DidPrintPage_Params& params,
-                           double scale_factor,
-                           ScopedVector<MetafilePlayer>* emf_files);
-#endif  // OS_WIN
-
   content::NotificationRegistrar registrar_;
 
   // Manages the low-level talk to the printer.
   scoped_refptr<PrintJob> print_job_;
 
   // Number of pages to print in the print job.
   int number_pages_;
 
   // Indication of success of the print job.
   bool printing_succeeded_;
 
   // Running an inner message loop inside RenderAllMissingPagesNow(). This means
   // we are _blocking_ until all the necessary pages have been rendered or the
   // print settings are being loaded.
   bool inside_inner_message_loop_;
 
 #if !defined(OS_MACOSX)
   // Set to true when OnDidPrintPage() should be expecting the first page.
   bool expecting_first_page_;
 #endif  // OS_MACOSX
 
-#if defined(OS_WIN)
-  scoped_ptr<PdfToEmfConverter> pdf_to_emf_converter_;
-#endif  // OS_WIN
-
   // The document cookie of the current PrinterQuery.
   int cookie_;
 
   // Whether printing is enabled.
   BooleanPrefMember printing_enabled_;
 
   scoped_refptr<printing::PrintQueriesQueue> queue_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintViewManagerBase);
 };
 
 }  // namespace printing
 
 #endif  // CHROME_BROWSER_PRINTING_PRINT_VIEW_MANAGER_BASE_H_