Add CFX_FontMapper::IsBuiltinFace() in master branch

core/include/fxge/fx_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 CORE_INCLUDE_FXGE_FX_FONT_H_
 #define CORE_INCLUDE_FXGE_FX_FONT_H_
 
 #include <map>
@@ skipping 239 matching lines @@
     m_pFontEnumerator = pFontEnumerator;
   }
   IFX_FontEnumerator* GetFontEnumerator() const { return m_pFontEnumerator; }
   FXFT_Face FindSubstFont(const CFX_ByteString& face_name,
                           FX_BOOL bTrueType,
                           FX_DWORD flags,
                           int weight,
                           int italic_angle,
                           int CharsetCP,
                           CFX_SubstFont* pSubstFont);
+  FX_BOOL IsBuiltinFace(const FXFT_Face face) const;
 
  private:
   static const size_t MM_FACE_COUNT = 2;
   static const size_t FOXIT_FACE_COUNT = 14;
 
   CFX_ByteString GetPSNameFromTT(void* hFont);
   CFX_ByteString MatchInstalledFonts(const CFX_ByteString& norm_name);
   FXFT_Face UseInternalSubst(CFX_SubstFont* pSubstFont,
                              int iBaseFont,
                              int italic_angle,
@@ skipping 178 matching lines @@
 
  protected:
   virtual ~IFX_GSUBTable() {}
 };
 
 CFX_ByteString GetNameFromTT(const uint8_t* name_table, FX_DWORD name);
 
 int PDF_GetStandardFontName(CFX_ByteString* name);
 
 #endif  // CORE_INCLUDE_FXGE_FX_FONT_H_