Remove IXFA_Parser, cleanup XFA parser code.

xfa/fxfa/parser/xfa_document_layout_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_document_layout_imp.h"
 
 #include "xfa/fxfa/parser/xfa_basic_imp.h"
 #include "xfa/fxfa/parser/xfa_doclayout.h"
 #include "xfa/fxfa/parser/xfa_document.h"
 #include "xfa/fxfa/parser/xfa_document_datamerger_imp.h"
 #include "xfa/fxfa/parser/xfa_layout_appadapter.h"
 #include "xfa/fxfa/parser/xfa_layout_itemlayout.h"
 #include "xfa/fxfa/parser/xfa_layout_pagemgr_new.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"
 
 CXFA_LayoutProcessor* CXFA_Document::GetLayoutProcessor() {
   if (!m_pLayoutProcessor) {
     m_pLayoutProcessor = new CXFA_LayoutProcessor(this);
     ASSERT(m_pLayoutProcessor);
   }
   return m_pLayoutProcessor;
 }
@@ skipping 167 matching lines @@
 CXFA_ContentLayoutItem::CXFA_ContentLayoutItem(CXFA_Node* pNode)
     : CXFA_LayoutItem(pNode, TRUE),
       m_pPrev(nullptr),
       m_pNext(nullptr),
       m_dwStatus(0) {}
 CXFA_ContentLayoutItem::~CXFA_ContentLayoutItem() {
   if (m_pFormNode->GetUserData(XFA_LAYOUTITEMKEY) == this) {
     m_pFormNode->SetUserData(XFA_LAYOUTITEMKEY, nullptr);
   }
 }