Removed NativeMetafile and PreviewMetafile typedef as it's always PdfMetafileSkia.

printing/metafile_impl.h

Index: printing/metafile_impl.h
diff --git a/printing/metafile_impl.h b/printing/metafile_impl.h
deleted file mode 100644
index 9fb2307131d2f7f01f61a197375a1272220fe898..0000000000000000000000000000000000000000
--- a/printing/metafile_impl.h
+++ /dev/null
@@ -1,26 +0,0 @@
-// 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_METAFILE_IMPL_H_
-#define PRINTING_METAFILE_IMPL_H_
-
-#include "printing/pdf_metafile_skia.h"
-
-#if defined(OS_WIN)
-#include "printing/emf_win.h"
-#endif
-
-namespace printing {
-
-#if defined(OS_WIN) && !defined(WIN_PDF_METAFILE_FOR_PRINTING)
-typedef Emf NativeMetafile;
-typedef PdfMetafileSkia PreviewMetafile;
-#else
-typedef PdfMetafileSkia NativeMetafile;
-typedef PdfMetafileSkia PreviewMetafile;
-#endif
-
-}  // namespace printing
-
-#endif  // PRINTING_METAFILE_IMPL_H_