Use smart pointers for class owned pointers

xfa/fgas/font/fgas_gefont.h

 // Copyright 2014 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 XFA_FGAS_FONT_FGAS_GEFONT_H_
 #define XFA_FGAS_FONT_FGAS_GEFONT_H_
 
 #include <map>
 
+#include "core/fxcrt/include/fx_memory.h"
 #include "xfa/fgas/crt/fgas_utils.h"
 #include "xfa/fgas/font/fgas_font.h"
 
 #define FXFONT_SUBST_ITALIC 0x02
 
 class CXFA_PDFFontMgr;
 
 class CFGAS_GEFont {
  public:
   static CFGAS_GEFont* LoadFont(const FX_WCHAR* pszFontFamily,
@@ skipping 63 matching lines @@
   int32_t GetGlyphIndex(FX_WCHAR wUnicode,
                         FX_BOOL bRecursive,
                         CFGAS_GEFont** ppFont,
                         FX_BOOL bCharCode = FALSE);
 
 #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
   FX_BOOL m_bUseLogFontStyle;
   uint32_t m_dwLogFontStyle;
 #endif
   CFX_Font* m_pFont;
-  IFGAS_FontMgr* m_pFontMgr;
+  IFGAS_FontMgr* const m_pFontMgr;
   int32_t m_iRefCount;
   FX_BOOL m_bExtFont;
-  IFX_Stream* m_pStream;
-  IFX_FileRead* m_pFileRead;
-  CFX_UnicodeEncoding* m_pFontEncoding;
-  CFX_DiscreteArrayTemplate<uint16_t>* m_pCharWidthMap;
-  CFX_MassArrayTemplate<CFX_Rect>* m_pRectArray;
-  CFX_MapPtrToPtr* m_pBBoxMap;
-  CXFA_PDFFontMgr* m_pProvider;
+  std::unique_ptr<IFX_Stream, ReleaseDeleter<IFX_Stream>> m_pStream;
+  std::unique_ptr<IFX_FileRead, ReleaseDeleter<IFX_FileRead>> m_pFileRead;
+  std::unique_ptr<CFX_UnicodeEncoding> m_pFontEncoding;
+  std::unique_ptr<CFX_DiscreteArrayTemplate<uint16_t>> m_pCharWidthMap;
+  std::unique_ptr<CFX_MassArrayTemplate<CFX_Rect>> m_pRectArray;
+  std::unique_ptr<CFX_MapPtrToPtr> m_pBBoxMap;
+  CXFA_PDFFontMgr* m_pProvider;  // not owned.
   CFX_ArrayTemplate<CFGAS_GEFont*> m_SubstFonts;
   std::map<FX_WCHAR, CFGAS_GEFont*> m_FontMapper;
 };
 
 #endif  // XFA_FGAS_FONT_FGAS_GEFONT_H_