Remove IXFA_Parser, cleanup XFA parser code.

xfa/fxfa/include/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_INCLUDE_XFA_FFDOC_H_
 #define XFA_FXFA_INCLUDE_XFA_FFDOC_H_
 
 #include <map>
@@ skipping 20 matching lines @@
   IXFA_DocProvider* GetDocProvider() { return m_pDocProvider; }
   uint32_t GetDocType();
   int32_t StartLoad();
   int32_t DoLoad(IFX_Pause* pPause = nullptr);
   void StopLoad();
   CXFA_FFDocView* 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_Document* GetXFADoc() { return m_pDocumentParser->GetDocument(); }
   CXFA_FFApp* GetApp() { return m_pApp; }
   CXFA_FFDocView* GetDocView(CXFA_LayoutProcessor* pLayout);
   CXFA_FFDocView* GetDocView();
   CPDF_Document* GetPDFDoc();
   CFX_DIBitmap* GetPDFNamedImage(const CFX_WideStringC& wsName,
                                  int32_t& iImageXDpi,
                                  int32_t& iImageYDpi);
 
   bool SavePackage(XFA_HashCode code,
                    IFX_FileWrite* pFile,
                    CXFA_ChecksumContext* pCSContext);
   FX_BOOL ImportData(IFX_FileRead* pStream, FX_BOOL bXDP = TRUE);
 
  protected:
   IXFA_DocProvider* m_pDocProvider;
-  CXFA_Document* m_pDocument;
+  std::unique_ptr<CXFA_DocumentParser> m_pDocumentParser;
   IFX_FileRead* m_pStream;
   CXFA_FFApp* m_pApp;
-  CXFA_FFNotify* m_pNotify;
+  std::unique_ptr<CXFA_FFNotify> m_pNotify;
   CPDF_Document* m_pPDFDoc;
   std::map<uint32_t, FX_IMAGEDIB_AND_DPI> m_HashToDibDpiMap;
   std::map<uint32_t, std::unique_ptr<CXFA_FFDocView>> m_TypeToDocViewMap;
   uint32_t m_dwDocType;
   FX_BOOL m_bOwnStream;
 };
 
 #endif  // XFA_FXFA_INCLUDE_XFA_FFDOC_H_