Create a Factory for NativeMetafile.

printing/printed_document.h

 // 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.
 
 #ifndef PRINTING_PRINTED_DOCUMENT_H_
 #define PRINTING_PRINTED_DOCUMENT_H_
 
 #include <map>
 
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "base/string16.h"
 #include "base/synchronization/lock.h"
 #include "googleurl/src/gurl.h"
 #include "printing/print_settings.h"
-#include "printing/native_metafile.h"
 #include "ui/gfx/native_widget_types.h"
 
 class FilePath;
 class MessageLoop;
 
 namespace gfx {
 class Font;
 }
 
 namespace printing {
 
+class NativeMetafile;
 class PrintedPage;
 class PrintedPagesSource;
 class PrintingContext;
 
 // A collection of rendered pages. The settings are immutable. If the print
 // settings are changed, a new PrintedDocument must be created.
 // Warning: May be accessed from many threads at the same time. Only one thread
 // will have write access. Sensible functions are protected by a lock.
 // Warning: Once a page is loaded, it cannot be replaced. Pages may be discarded
 // under low memory conditions.
@@ skipping 169 matching lines @@
 
   // All the immutable members.
   const Immutable immutable_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintedDocument);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PRINTED_DOCUMENT_H_