Refcount all the IFX_ stream classes all the time.

core/fxcrt/fx_basic.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_FXCRT_FX_BASIC_H_
 #define CORE_FXCRT_FX_BASIC_H_
 
 #include <algorithm>
 #include <memory>
 
+#include "core/fxcrt/cfx_retain_ptr.h"
 #include "core/fxcrt/fx_memory.h"
 #include "core/fxcrt/fx_stream.h"
 #include "core/fxcrt/fx_string.h"
 #include "core/fxcrt/fx_system.h"
 
 class CFX_BinaryBuf {
  public:
   CFX_BinaryBuf();
   explicit CFX_BinaryBuf(FX_STRSIZE size);
   ~CFX_BinaryBuf();
@@ skipping 89 matching lines @@
  public:
   CFX_FileBufferArchive();
   ~CFX_FileBufferArchive();
 
   void Clear();
   bool Flush();
   int32_t AppendBlock(const void* pBuf, size_t size);
   int32_t AppendByte(uint8_t byte);
   int32_t AppendDWord(uint32_t i);
   int32_t AppendString(const CFX_ByteStringC& lpsz);
-
-  // |pFile| must outlive the CFX_FileBufferArchive.
-  void AttachFile(IFX_WriteStream* pFile);
+  void AttachFile(const CFX_RetainPtr<IFX_WriteStream>& pFile);
 
  private:
   static const size_t kBufSize = 32768;
 
   size_t m_Length;
   std::unique_ptr<uint8_t, FxFreeDeleter> m_pBuffer;
-  IFX_WriteStream* m_pFile;
+  CFX_RetainPtr<IFX_WriteStream> m_pFile;
 };
 
 class CFX_CharMap {
  public:
   static CFX_ByteString GetByteString(uint16_t codepage,
                                       const CFX_WideStringC& wstr);
 
   static CFX_WideString GetWideString(uint16_t codepage,
                                       const CFX_ByteStringC& bstr);
 
@@ skipping 707 matching lines @@
   FX_FLOAT e;
   FX_FLOAT f;
   FX_FLOAT g;
   FX_FLOAT h;
   FX_FLOAT i;
 };
 
 uint32_t GetBits32(const uint8_t* pData, int bitpos, int nbits);
 
 #endif  // CORE_FXCRT_FX_BASIC_H_