Rename IFX_ stream names

fpdfsdk/fpdfxfa/cpdfxfa_docenvironment.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 FPDFSDK_FPDFXFA_CPDFXFA_DOCENVIRONMENT_H_
 #define FPDFSDK_FPDFXFA_CPDFXFA_DOCENVIRONMENT_H_
 
 #include "public/fpdfview.h"
@@ skipping 67 matching lines @@
    */
   FX_BOOL SubmitData(CXFA_FFDoc* hDoc, CXFA_Submit submit) override;
 
   FX_BOOL GetGlobalProperty(CXFA_FFDoc* hDoc,
                             const CFX_ByteStringC& szPropName,
                             CFXJSE_Value* pValue) override;
   FX_BOOL SetGlobalProperty(CXFA_FFDoc* hDoc,
                             const CFX_ByteStringC& szPropName,
                             CFXJSE_Value* pValue) override;
 
-  IFX_FileRead* OpenLinkedFile(CXFA_FFDoc* hDoc,
-                               const CFX_WideString& wsLink) override;
+  IFX_SeekableReadStream* OpenLinkedFile(CXFA_FFDoc* hDoc,
+                                         const CFX_WideString& wsLink) override;
 
  private:
   FX_BOOL OnBeforeNotifySubmit();
   void OnAfterNotifySubmit();
   FX_BOOL NotifySubmit(FX_BOOL bPrevOrPost);
   FX_BOOL SubmitDataInternal(CXFA_FFDoc* hDoc, CXFA_Submit submit);
   FX_BOOL MailToInfo(CFX_WideString& csURL,
                      CFX_WideString& csToAddress,
                      CFX_WideString& csCCAddress,
                      CFX_WideString& csBCCAddress,
                      CFX_WideString& csSubject,
                      CFX_WideString& csMsg);
   FX_BOOL ExportSubmitFile(FPDF_FILEHANDLER* ppFileHandler,
                            int fileType,
                            FPDF_DWORD encodeType,
                            FPDF_DWORD flag);
   void ToXFAContentFlags(CFX_WideString csSrcContent, FPDF_DWORD& flag);
 
   CPDFXFA_Document* const m_pDocument;  // Not owned;
   IJS_Context* m_pJSContext;
 };
 
 #endif  // FPDFSDK_FPDFXFA_CPDFXFA_DOCENVIRONMENT_H_