Revert of clean up printing::Image and printing::Metafile

printing/metafile.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 PRINTING_METAFILE_H_
 #define PRINTING_METAFILE_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "printing/native_drawing_context.h"
 #include "printing/printing_export.h"
 
+#if defined(OS_WIN)
+#include <windows.h>
+#endif
+
 namespace base {
 class File;
 }
 
 namespace gfx {
 class Rect;
 class Size;
 }
 
 namespace printing {
@@ skipping 65 matching lines @@
   // Copies the first |dst_buffer_size| bytes of the underlying data stream into
   // |dst_buffer|. This function should ONLY be called after Close() is invoked.
   // Returns true if the copy succeeds.
   virtual bool GetData(void* dst_buffer, uint32_t dst_buffer_size) const = 0;
 
   virtual gfx::Rect GetPageBounds(unsigned int page_number) const = 0;
   virtual unsigned int GetPageCount() const = 0;
 
   virtual skia::NativeDrawingContext context() const = 0;
 
+#if defined(OS_WIN)
+  // "Plays" the EMF buffer in a HDC. It is the same effect as calling the
+  // original GDI function that were called when recording the EMF. |rect| is in
+  // "logical units" and is optional. If |rect| is NULL, the natural EMF bounds
+  // are used.
+  // Note: Windows has been known to have stack buffer overflow in its GDI
+  // functions, whether used directly or indirectly through precompiled EMF
+  // data. We have to accept the risk here. Since it is used only for printing,
+  // it requires user intervention.
+  virtual bool Playback(skia::NativeDrawingContext hdc,
+                        const RECT* rect) const = 0;
+#endif  // OS_WIN
+
   // MetfilePlayer
   bool GetDataAsVector(std::vector<char>* buffer) const override;
   bool SaveTo(base::File* file) const override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Metafile);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_METAFILE_H_