Connect the right metafiles for print preview on Linux and Windows.

printing/pdf_metafile_skia.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_PDF_METAFILE_SKIA_H_
 #define PRINTING_PDF_METAFILE_SKIA_H_
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "build/build_config.h"
-#include "printing/native_metafile.h"
+#include "printing/metafile.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 namespace printing {
 
 struct PdfMetafileSkiaData;
 
 // This class uses Skia graphics library to generate a PDF document.
-class PdfMetafileSkia : public NativeMetafile {
+class PdfMetafileSkia : public Metafile {
  public:
+  PdfMetafileSkia();
   virtual ~PdfMetafileSkia();
 
-  // NativeMetafile interface
+  // Metafile methods.
   virtual bool Init();
   virtual bool InitFromData(const void* src_buffer, uint32 src_buffer_size);
 
   virtual skia::PlatformDevice* StartPageForVectorCanvas(
       const gfx::Size& page_size,
       const gfx::Point& content_origin,
       const float& scale_factor);
   virtual bool StartPage(const gfx::Size& page_size,
                          const gfx::Point& content_origin,
                          const float& scale_factor);
@@ skipping 10 matching lines @@
 
   virtual gfx::NativeDrawingContext context() const;
 
 #if defined(OS_WIN)
   virtual bool Playback(gfx::NativeDrawingContext hdc, const RECT* rect) const;
   virtual bool SafePlayback(gfx::NativeDrawingContext hdc) const;
   virtual HENHMETAFILE emf() const;
 #endif  // if defined(OS_WIN)
 
 #if defined(OS_CHROMEOS)
-  virtual bool SaveToFD(const base::FileDescriptor& fd) const = 0;
+  virtual bool SaveToFD(const base::FileDescriptor& fd) const;
 #endif  // if defined(OS_CHROMEOS)
-
- protected:
-  PdfMetafileSkia();
-
  private:
-  friend class NativeMetafileFactory;
-
   scoped_ptr<PdfMetafileSkiaData> data_;
 
   DISALLOW_COPY_AND_ASSIGN(PdfMetafileSkia);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PDF_METAFILE_MAC_H_