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

printing/native_metafile_skia_wrapper.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_NATIVE_METAFILE_SKIA_WRAPPER_H_
-#define PRINTING_NATIVE_METAFILE_SKIA_WRAPPER_H_
-
-#include "third_party/skia/include/core/SkRefCnt.h"
-
-class SkCanvas;
-
-namespace printing {
-
-class NativeMetafile;
-
-// A wrapper class with static methods to set and retrieve a NativeMetafile
-// on an SkCanvas.  The ownership of the metafile is not affected and it
-// is the caller's responsibility to ensure that the metafile remains valid
-// as long as the canvas.
-class NativeMetafileSkiaWrapper : public SkRefCnt {
- public:
-  static void SetMetafileOnCanvas(SkCanvas* canvas, NativeMetafile* metafile);
-
-  static NativeMetafile* GetMetafileFromCanvas(SkCanvas* canvas);
-
- private:
-  explicit NativeMetafileSkiaWrapper(NativeMetafile* metafile);
-
-  NativeMetafile* metafile_;
-};
-
-}  // namespace printing
-
-#endif  // PRINTING_NATIVE_METAFILE_SKIA_WRAPPER_H_