Make CPDF_Font::Create() return a std::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>
@@ skipping 20 matching lines @@
 class CPDF_Document;
 class CPDF_Object;
 class CPDF_StreamAcc;
 class CPDF_TrueTypeFont;
 class CPDF_Type1Font;
 class CPDF_Type3Font;
 class CPDF_ToUnicodeMap;
 
 class CPDF_Font {
  public:
-  static CPDF_Font* CreateFontF(CPDF_Document* pDoc,
-                                CPDF_Dictionary* pFontDict);
+  static std::unique_ptr<CPDF_Font> Create(CPDF_Document* pDoc,
+                                           CPDF_Dictionary* pFontDict);
   static CPDF_Font* GetStockFont(CPDF_Document* pDoc,
                                  const CFX_ByteStringC& fontname);
   static const uint32_t kInvalidCharCode = static_cast<uint32_t>(-1);
 
   virtual ~CPDF_Font();
 
   virtual bool IsType1Font() const;
   virtual bool IsTrueTypeFont() const;
   virtual bool IsType3Font() const;
   virtual bool IsCIDFont() const;
@@ skipping 71 matching lines @@
   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_