Remove FFI_ from CPDFSDK_Environment method names

fpdfsdk/fpdfxfa/include/fpdfxfa_app.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 FPDFSDK_FPDFXFA_INCLUDE_FPDFXFA_APP_H_
 #define FPDFSDK_FPDFXFA_INCLUDE_FPDFXFA_APP_H_
 
 #include "xfa/fxfa/include/fxfa.h"
@@ skipping 35 matching lines @@
   void Beep(uint32_t dwType) override;
   int32_t MsgBox(const CFX_WideString& wsMessage,
                  const CFX_WideString& wsTitle,
                  uint32_t dwIconType,
                  uint32_t dwButtonType) override;
   CFX_WideString Response(const CFX_WideString& wsQuestion,
                           const CFX_WideString& wsTitle,
                           const CFX_WideString& wsDefaultAnswer,
                           FX_BOOL bMark) override;
 
-  int32_t GetDocumentCountInBatch() override;
-  int32_t GetCurDocumentInBatch() override;
-
   IFX_FileRead* DownloadURL(const CFX_WideString& wsURL) override;
   FX_BOOL PostRequestURL(const CFX_WideString& wsURL,
                          const CFX_WideString& wsData,
                          const CFX_WideString& wsContentType,
                          const CFX_WideString& wsEncode,
                          const CFX_WideString& wsHeader,
                          CFX_WideString& wsResponse) override;
   FX_BOOL PutRequestURL(const CFX_WideString& wsURL,
                         const CFX_WideString& wsData,
                         const CFX_WideString& wsEncode) override;
 
   void LoadString(int32_t iStringID, CFX_WideString& wsString) override;
   IFWL_AdapterTimerMgr* GetTimerMgr() override;
 
   CFX_ArrayTemplate<CPDFSDK_Environment*> m_pEnvList;
 
  protected:
   FX_BOOL m_bJavaScriptInitialized;
   std::unique_ptr<CXFA_FFApp> m_pXFAApp;
   v8::Isolate* m_pIsolate;
   CFX_WideString m_csAppType;
 };
 
 #endif  // FPDFSDK_FPDFXFA_INCLUDE_FPDFXFA_APP_H_