Remove IXFA_* interfaces.

xfa/fxfa/app/xfa_ffdoc.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_APP_XFA_FFDOC_H_
-#define XFA_FXFA_APP_XFA_FFDOC_H_
-
-#include "xfa/fxfa/parser/xfa_document.h"
-#include "xfa/include/fxfa/fxfa.h"
-
-class CXFA_FFApp;
-class CXFA_FFNotify;
-class CXFA_FFDocView;
-
-struct FX_IMAGEDIB_AND_DPI {
-  CFX_DIBSource* pDibSource;
-  int32_t iImageXDpi;
-  int32_t iImageYDpi;
-};
-
-class CXFA_FFDoc : public IXFA_Doc {
- public:
-  CXFA_FFDoc(CXFA_FFApp* pApp, IXFA_DocProvider* pDocProvider);
-  ~CXFA_FFDoc();
-  IXFA_DocProvider* GetDocProvider() { return m_pDocProvider; }
-  uint32_t GetDocType();
-  int32_t StartLoad();
-  int32_t DoLoad(IFX_Pause* pPause = NULL);
-  void StopLoad();
-  IXFA_DocView* CreateDocView(uint32_t dwView = 0);
-  FX_BOOL OpenDoc(IFX_FileRead* pStream, FX_BOOL bTakeOverFile);
-  FX_BOOL OpenDoc(CPDF_Document* pPDFDoc);
-  FX_BOOL CloseDoc();
-  void SetDocType(uint32_t dwType);
-  CXFA_Document* GetXFADoc() { return m_pDocument; }
-  CXFA_FFApp* GetApp() { return m_pApp; }
-  CXFA_FFDocView* GetDocView(IXFA_DocLayout* pLayout);
-  CXFA_FFDocView* GetDocView();
-  CPDF_Document* GetPDFDoc();
-  CFX_DIBitmap* GetPDFNamedImage(const CFX_WideStringC& wsName,
-                                 int32_t& iImageXDpi,
-                                 int32_t& iImageYDpi);
-  CFDE_XMLElement* GetPackageData(const CFX_WideStringC& wsPackage);
-  FX_BOOL SavePackage(const CFX_WideStringC& wsPackage,
-                      IFX_FileWrite* pFile,
-                      IXFA_ChecksumContext* pCSContext = NULL);
-  FX_BOOL ImportData(IFX_FileRead* pStream, FX_BOOL bXDP = TRUE);
-
- protected:
-  IXFA_DocProvider* m_pDocProvider;
-  CXFA_Document* m_pDocument;
-  IFX_FileRead* m_pStream;
-  CXFA_FFApp* m_pApp;
-  CXFA_FFNotify* m_pNotify;
-  CPDF_Document* m_pPDFDoc;
-  CFX_MapPtrToPtr m_mapNamedImages;
-  CFX_MapPtrToPtr m_mapTypeToDocView;
-  uint32_t m_dwDocType;
-  FX_BOOL m_bOwnStream;
-};
-
-#endif  // XFA_FXFA_APP_XFA_FFDOC_H_