[Android] Add support for standalone PDFium gn build on Android.

core/fxge/android/fpf_skiafontmgr.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_FXGE_ANDROID_FPF_SKIAFONTMGR_H_
 #define CORE_FXGE_ANDROID_FPF_SKIAFONTMGR_H_
 
 #include "core/fxcrt/include/fx_system.h"
@@ skipping 93 matching lines @@
                             uint32_t dwMatch = 0);
 
   FX_BOOL InitFTLibrary();
   FXFT_Face GetFontFace(IFX_FileRead* pFileRead, int32_t iFaceIndex = 0);
   FXFT_Face GetFontFace(const CFX_ByteStringC& bsFile, int32_t iFaceIndex = 0);
   FXFT_Face GetFontFace(const uint8_t* pBuffer,
                         size_t szBuffer,
                         int32_t iFaceIndex = 0);
 
  protected:
-  void ScanPath(const CFX_ByteStringC& path);
-  void ScanFile(const CFX_ByteStringC& file);
+  void ScanPath(const CFX_ByteString& path);
+  void ScanFile(const CFX_ByteString& file);
   void ReportFace(FXFT_Face face, CFPF_SkiaFontDescriptor* pFontDesc);
   void OutputSystemFonts();
 
   FX_BOOL m_bLoaded;
   FXFT_Library m_FTLibrary;
   std::vector<CFPF_SkiaFontDescriptor*> m_FontFaces;
   std::map<uint32_t, CFPF_SkiaFont*> m_FamilyFonts;
 };
 
 #endif  // _FX_OS_ == _FX_ANDROID_
 
 #endif  // CORE_FXGE_ANDROID_FPF_SKIAFONTMGR_H_