Refcount all the IFX_ stream classes all the time.

core/fxge/android/cfpf_skiafontmgr.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_FXGE_ANDROID_CFPF_SKIAFONTMGR_H_
 #define CORE_FXGE_ANDROID_CFPF_SKIAFONTMGR_H_
 
 #include <map>
@@ skipping 13 matching lines @@
   CFPF_SkiaFontMgr();
   ~CFPF_SkiaFontMgr();
 
   void LoadSystemFonts();
   CFPF_SkiaFont* CreateFont(const CFX_ByteStringC& bsFamilyname,
                             uint8_t uCharset,
                             uint32_t dwStyle,
                             uint32_t dwMatch = 0);
 
   bool InitFTLibrary();
-  FXFT_Face GetFontFace(IFX_SeekableReadStream* pFileRead,
+  FXFT_Face GetFontFace(const CFX_RetainPtr<IFX_SeekableReadStream>& 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);
 
  private:
   void ScanPath(const CFX_ByteString& path);
   void ScanFile(const CFX_ByteString& file);
   void ReportFace(FXFT_Face face, CFPF_SkiaFontDescriptor* pFontDesc);
 
   bool m_bLoaded;
   FXFT_Library m_FTLibrary;
   std::vector<CFPF_SkiaFontDescriptor*> m_FontFaces;
   std::map<uint32_t, CFPF_SkiaFont*> m_FamilyFonts;
 };
 
 #endif  // CORE_FXGE_ANDROID_CFPF_SKIAFONTMGR_H_