Remove IXFA_Parser, cleanup XFA parser code.

xfa/fxfa/parser/xfa_document_datadescription_imp.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 "xfa/fxfa/parser/xfa_doclayout.h"
 #include "xfa/fxfa/parser/xfa_document.h"
 #include "xfa/fxfa/parser/xfa_localemgr.h"
 #include "xfa/fxfa/parser/xfa_object.h"
-#include "xfa/fxfa/parser/xfa_parser.h"
 #include "xfa/fxfa/parser/xfa_script.h"
 #include "xfa/fxfa/parser/xfa_utils.h"
 
 class CXFA_TraverseStrategy_DDGroup {
  public:
   static inline CXFA_Node* GetFirstChild(CXFA_Node* pDDGroupNode) {
     return pDDGroupNode->GetFirstChildByName(XFA_HASHCODE_Group);
   }
   static inline CXFA_Node* GetNextSibling(CXFA_Node* pDDGroupNode) {
     return pDDGroupNode->GetNextSameNameSibling(XFA_HASHCODE_Group);
@@ skipping 90 matching lines @@
         pDataNode->SetEnum(XFA_ATTRIBUTE_Contains, XFA_ATTRIBUTEENUM_MetaData);
       }
       pDataParent->InsertChild(pDataNode);
       pDataNode->SetDataDescriptionNode(pDDNode);
       pDataNode->SetFlag(XFA_NodeFlag_Initialized, false);
       return pDataNode;
     }
     return nullptr;
   }
 }