Refcount all the IFX_ stream classes all the time.

xfa/fxfa/parser/cxfa_simple_parser.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 XFA_FXFA_PARSER_CXFA_SIMPLE_PARSER_H_
 #define XFA_FXFA_PARSER_CXFA_SIMPLE_PARSER_H_
 
 #include <memory>
 
 #include "xfa/fde/xml/fde_xml_imp.h"
 #include "xfa/fxfa/fxfa_basic.h"
 
 class CXFA_Document;
 class CXFA_Node;
 class CXFA_XMLParser;
 class IFX_SeekableReadStream;
 class IFX_Pause;
 class IFGAS_Stream;
 
 class CXFA_SimpleParser {
  public:
   CXFA_SimpleParser(CXFA_Document* pFactory, bool bDocumentParser);
   ~CXFA_SimpleParser();
 
-  int32_t StartParse(IFX_SeekableReadStream* pStream, XFA_XDPPACKET ePacketID);
+  int32_t StartParse(const CFX_RetainPtr<IFX_SeekableReadStream>& pStream,
+                     XFA_XDPPACKET ePacketID);
   int32_t DoParse(IFX_Pause* pPause);
   int32_t ParseXMLData(const CFX_WideString& wsXML,
                        CFDE_XMLNode*& pXMLNode,
                        IFX_Pause* pPause);
   void ConstructXFANode(CXFA_Node* pXFANode, CFDE_XMLNode* pXMLNode);
   CXFA_Node* GetRootNode() const;
   CFDE_XMLDoc* GetXMLDoc() const;
   void CloseParser();
 
   void SetFactory(CXFA_Document* pFactory);
@@ skipping 33 matching lines @@
   void ParseDataGroup(CXFA_Node* pXFANode,
                       CFDE_XMLNode* pXMLNode,
                       XFA_XDPPACKET ePacketID);
   void ParseInstruction(CXFA_Node* pXFANode,
                         CFDE_XMLInstruction* pXMLInstruction,
                         XFA_XDPPACKET ePacketID);
 
   CXFA_XMLParser* m_pXMLParser;
   std::unique_ptr<CFDE_XMLDoc> m_pXMLDoc;
   std::unique_ptr<IFGAS_Stream, ReleaseDeleter<IFGAS_Stream>> m_pStream;
-  IFX_SeekableReadStream* m_pFileRead;
+  CFX_RetainPtr<IFX_SeekableReadStream> m_pFileRead;
   CXFA_Document* m_pFactory;
   CXFA_Node* m_pRootNode;
   XFA_XDPPACKET m_ePacketID;
   bool m_bDocumentParser;
 };
 
 #endif  // XFA_FXFA_PARSER_CXFA_SIMPLE_PARSER_H_