Use smart pointers for class owned pointers in xfa/fxfa

xfa/fgas/font/fgas_font.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_FONT_H_
 #define XFA_FGAS_FONT_FGAS_FONT_H_
 
 #include "core/fxge/include/fx_font.h"
@@ skipping 62 matching lines @@
 #define FX_FONTMATCHPARA_MacthFamily 0x02
 #define FX_FONTMATCHPARA_MacthUnicode 0x04
 typedef void (*FX_LPEnumAllFonts)(CFX_FontDescriptors& fonts,
                                   const FX_WCHAR* pwsFaceName,
                                   FX_WCHAR wUnicode);
 FX_LPEnumAllFonts FX_GetDefFontEnumerator();
 typedef FX_FONTDESCRIPTOR const* (*FX_LPMatchFont)(
     FX_LPFONTMATCHPARAMS pParams,
     const CFX_FontDescriptors& fonts);
 FX_LPMatchFont FX_GetDefFontMatchor();
+
 class IFGAS_FontMgr {
  public:
-  static IFGAS_FontMgr* Create(FX_LPEnumAllFonts pEnumerator);
   virtual ~IFGAS_FontMgr() {}
-  virtual void Release() = 0;
+
+  static std::unique_ptr<IFGAS_FontMgr> Create(FX_LPEnumAllFonts pEnumerator);
+
   virtual CFGAS_GEFont* GetDefFontByCodePage(
       uint16_t wCodePage,
       uint32_t dwFontStyles,
       const FX_WCHAR* pszFontFamily = nullptr) = 0;
   virtual CFGAS_GEFont* GetDefFontByCharset(
       uint8_t nCharset,
       uint32_t dwFontStyles,
       const FX_WCHAR* pszFontFamily = nullptr) = 0;
   virtual CFGAS_GEFont* GetDefFontByUnicode(
       FX_WCHAR wUnicode,
@@ skipping 16 matching lines @@
                                  uint32_t dwFontStyles,
                                  uint16_t wCodePage = 0xFFFF) = 0;
   virtual void ClearFontCache() = 0;
   virtual void RemoveFont(CFGAS_GEFont* pFont) = 0;
 };
 
 #else   //  _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
 
 class IFGAS_FontMgr {
  public:
-  static IFGAS_FontMgr* Create(CFX_FontSourceEnum_File* pFontEnum);
   virtual ~IFGAS_FontMgr() {}
-  virtual void Release() = 0;
-  virtual CFGAS_GEFont* GetDefFontByCodePage(
-      uint16_t wCodePage,
-      uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = nullptr) = 0;
-  virtual CFGAS_GEFont* GetDefFontByCharset(
-      uint8_t nCharset,
-      uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = nullptr) = 0;
-  virtual CFGAS_GEFont* GetDefFontByUnicode(
-      FX_WCHAR wUnicode,
-      uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = nullptr) = 0;
-  virtual CFGAS_GEFont* GetDefFontByLanguage(
-      uint16_t wLanguage,
-      uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = nullptr) = 0;
-  virtual CFGAS_GEFont* GetFontByCodePage(
-      uint16_t wCodePage,
-      uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = nullptr) = 0;
+
+  static std::unique_ptr<IFGAS_FontMgr> Create(
+      CFX_FontSourceEnum_File* pFontEnum);
+
+  virtual CFGAS_GEFont* GetDefFontByCodePage(uint16_t wCodePage,
+                                             uint32_t dwFontStyles,
+                                             const FX_WCHAR* pszFontFamily) = 0;
+  virtual CFGAS_GEFont* GetDefFontByCharset(uint8_t nCharset,
+                                            uint32_t dwFontStyles,
+                                            const FX_WCHAR* pszFontFamily) = 0;
+  virtual CFGAS_GEFont* GetDefFontByUnicode(FX_WCHAR wUnicode,
+                                            uint32_t dwFontStyles,
+                                            const FX_WCHAR* pszFontFamily) = 0;
+  virtual CFGAS_GEFont* GetDefFontByLanguage(uint16_t wLanguage,
+                                             uint32_t dwFontStyles,
+                                             const FX_WCHAR* pszFontFamily) = 0;
+  virtual CFGAS_GEFont* GetFontByCodePage(uint16_t wCodePage,
+                                          uint32_t dwFontStyles,
+                                          const FX_WCHAR* pszFontFamily) = 0;
   inline CFGAS_GEFont* LoadFont(const FX_WCHAR* pszFontFamily,
                                 uint32_t dwFontStyles,
                                 uint16_t wCodePage) {
     return GetFontByCodePage(wCodePage, dwFontStyles, pszFontFamily);
   }
-  virtual CFGAS_GEFont* GetFontByCharset(
-      uint8_t nCharset,
-      uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = nullptr) = 0;
-  virtual CFGAS_GEFont* GetFontByUnicode(
-      FX_WCHAR wUnicode,
-      uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = nullptr) = 0;
-  virtual CFGAS_GEFont* GetFontByLanguage(
-      uint16_t wLanguage,
-      uint32_t dwFontStyles,
-      const FX_WCHAR* pszFontFamily = nullptr) = 0;
+  virtual CFGAS_GEFont* GetFontByCharset(uint8_t nCharset,
+                                         uint32_t dwFontStyles,
+                                         const FX_WCHAR* pszFontFamily) = 0;
+  virtual CFGAS_GEFont* GetFontByUnicode(FX_WCHAR wUnicode,
+                                         uint32_t dwFontStyles,
+                                         const FX_WCHAR* pszFontFamily) = 0;
+  virtual CFGAS_GEFont* GetFontByLanguage(uint16_t wLanguage,
+                                          uint32_t dwFontStyles,
+                                          const FX_WCHAR* pszFontFamily) = 0;
   virtual void ClearFontCache() = 0;
   virtual void RemoveFont(CFGAS_GEFont* pFont) = 0;
 };
 #endif  //  _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
 
 #endif  // XFA_FGAS_FONT_FGAS_FONT_H_