Refcount all the IFX_ stream classes all the time.

core/fxge/android/cfpf_skiafilefont.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_SKIAFILEFONT_H_
 #define CORE_FXGE_ANDROID_CFPF_SKIAFILEFONT_H_
 
+#include "core/fxcrt/cfx_retain_ptr.h"
 #include "core/fxge/android/cfpf_skiafontdescriptor.h"
 
 class IFX_SeekableReadStream;
 
 #define FPF_SKIAFONTTYPE_File 2
 
 class CFPF_SkiaFileFont : public CFPF_SkiaFontDescriptor {
  public:
-  CFPF_SkiaFileFont() : m_pFile(nullptr) {}
+  CFPF_SkiaFileFont() {}
 
   // CFPF_SkiaFontDescriptor
   int32_t GetType() const override { return FPF_SKIAFONTTYPE_File; }
-  IFX_SeekableReadStream* m_pFile;
+
+  CFX_RetainPtr<IFX_SeekableReadStream> m_pFile;
 };
 
 #endif  // CORE_FXGE_ANDROID_CFPF_SKIAFILEFONT_H_