Rename IFX_ stream names

fpdfsdk/fpdfxfa/cpdfxfa_app.cpp

 // 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
 
 #include "fpdfsdk/fpdfxfa/cpdfxfa_app.h"
 
 #include <memory>
 
@@ skipping 169 matching lines @@
       pBuff[nLength + 1] = 0;
       wsAnswer = CFX_WideString::FromUTF16LE(
           reinterpret_cast<const unsigned short*>(pBuff),
           nLength / sizeof(unsigned short));
     }
     delete[] pBuff;
   }
   return wsAnswer;
 }
 
-IFX_FileRead* CPDFXFA_App::DownloadURL(const CFX_WideString& wsURL) {
+IFX_SeekableReadStream* CPDFXFA_App::DownloadURL(const CFX_WideString& wsURL) {
   CPDFSDK_FormFillEnvironment* pFormFillEnv = m_pFormFillEnvList.GetAt(0);
   return pFormFillEnv ? pFormFillEnv->DownloadFromURL(wsURL.c_str()) : nullptr;
 }
 
 FX_BOOL CPDFXFA_App::PostRequestURL(const CFX_WideString& wsURL,
                                     const CFX_WideString& wsData,
                                     const CFX_WideString& wsContentType,
                                     const CFX_WideString& wsEncode,
                                     const CFX_WideString& wsHeader,
                                     CFX_WideString& wsResponse) {
@@ skipping 113 matching lines @@
   }
 }
 
 IFWL_AdapterTimerMgr* CPDFXFA_App::GetTimerMgr() {
   CXFA_FWLAdapterTimerMgr* pAdapter = nullptr;
   CPDFSDK_FormFillEnvironment* pFormFillEnv = m_pFormFillEnvList.GetAt(0);
   if (pFormFillEnv)
     pAdapter = new CXFA_FWLAdapterTimerMgr(pFormFillEnv);
   return pAdapter;
 }