Convert //printing to use std::unique_ptr

printing/emf_win.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_EMF_WIN_H_
 #define PRINTING_EMF_WIN_H_
 
-#include <windows.h>
 #include <stddef.h>
 #include <stdint.h>
+#include <windows.h>
 
+#include <memory>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "printing/metafile.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace gfx {
 class Rect;
 class Size;
 }
@@ skipping 53 matching lines @@
   bool Playback(HDC hdc, const RECT* rect) const override;
   bool SafePlayback(HDC hdc) const override;
 
   HENHMETAFILE emf() const { return emf_; }
 
   // Returns true if metafile contains alpha blend.
   bool IsAlphaBlendUsed() const;
 
   // Returns new metafile with only bitmap created by playback of the current
   // metafile. Returns NULL if fails.
-  scoped_ptr<Emf> RasterizeMetafile(int raster_area_in_pixels) const;
+  std::unique_ptr<Emf> RasterizeMetafile(int raster_area_in_pixels) const;
 
   // Returns new metafile where AlphaBlend replaced by bitmaps. Returns NULL
   // if fails.
-  scoped_ptr<Emf> RasterizeAlphaBlend() const;
+  std::unique_ptr<Emf> RasterizeAlphaBlend() const;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(EmfTest, DC);
   FRIEND_TEST_ALL_PREFIXES(EmfPrintingTest, PageBreak);
   FRIEND_TEST_ALL_PREFIXES(EmfTest, FileBackedEmf);
 
   // Playbacks safely one EMF record.
   static int CALLBACK SafePlaybackProc(HDC hdc,
                                        HANDLETABLE* handle_table,
                                        const ENHMETARECORD* record,
@@ skipping 79 matching lines @@
   std::vector<Record> items_;
 
   EnumerationContext context_;
 
   DISALLOW_COPY_AND_ASSIGN(Enumerator);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_EMF_WIN_H_