Change class member variables in raw pointer type into unique_ptr

core/fpdfapi/fpdf_font/include/cpdf_font.h

 // Copyright 2016 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef CORE_FPDFAPI_FPDF_FONT_INCLUDE_CPDF_FONT_H_
 #define CORE_FPDFAPI_FPDF_FONT_INCLUDE_CPDF_FONT_H_
 
+#include <memory>
+
 #include "core/fxcrt/include/fx_string.h"
 #include "core/fxcrt/include/fx_system.h"
 #include "core/fxge/include/fx_font.h"
 
 #define PDFFONT_FIXEDPITCH 1
 #define PDFFONT_SERIF 2
 #define PDFFONT_SYMBOLIC 4
 #define PDFFONT_SCRIPT 8
 #define PDFFONT_NONSYMBOLIC 32
 #define PDFFONT_ITALIC 64
@@ skipping 87 matching lines @@
   void LoadFontDescriptor(CPDF_Dictionary* pDict);
   void CheckFontMetrics();
 
   const FX_CHAR* GetAdobeCharName(int iBaseEncoding,
                                   const CFX_ByteString* pCharNames,
                                   int charcode);
 
   CFX_ByteString m_BaseFont;
   CPDF_StreamAcc* m_pFontFile;
   CPDF_Dictionary* m_pFontDict;
-  mutable CPDF_ToUnicodeMap* m_pToUnicodeMap;
+  mutable std::unique_ptr<CPDF_ToUnicodeMap> m_pToUnicodeMap;
   mutable FX_BOOL m_bToUnicodeLoaded;
   int m_Flags;
   FX_RECT m_FontBBox;
   int m_StemV;
   int m_Ascent;
   int m_Descent;
   int m_ItalicAngle;
 };
 
 #endif  // CORE_FPDFAPI_FPDF_FONT_INCLUDE_CPDF_FONT_H_