Move fgas_sax into individual files in fde.

xfa/fxfa/include/xfa_checksum.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_CHECKSUM_H_
 #define XFA_FXFA_INCLUDE_XFA_CHECKSUM_H_
 
-#include "xfa/fgas/xml/fgas_sax.h"
+#include "xfa/fde/xml/cfx_saxreader.h"
 #include "xfa/fxfa/include/fxfa.h"
 
 class CXFA_SAXReaderHandler;
 class CXFA_ChecksumContext;
 
 class CXFA_SAXContext {
  public:
-  CXFA_SAXContext() : m_eNode(FX_SAXNODE_Unknown) {}
+  CXFA_SAXContext() : m_eNode(CFX_SAXItem::Type::Unknown) {}
 
   CFX_ByteTextBuf m_TextBuf;
   CFX_ByteString m_bsTagName;
-  FX_SAXNODE m_eNode;
+  CFX_SAXItem::Type m_eNode;
 };
 
 class CXFA_SAXReaderHandler {
  public:
   CXFA_SAXReaderHandler(CXFA_ChecksumContext* pContext);
   ~CXFA_SAXReaderHandler();
 
   void* OnTagEnter(const CFX_ByteStringC& bsTagName,
-                   FX_SAXNODE eType,
+                   CFX_SAXItem::Type eType,
                    uint32_t dwStartPos);
   void OnTagAttribute(void* pTag,
                       const CFX_ByteStringC& bsAttri,
                       const CFX_ByteStringC& bsValue);
   void OnTagBreak(void* pTag);
   void OnTagData(void* pTag,
-                 FX_SAXNODE eType,
+                 CFX_SAXItem::Type eType,
                  const CFX_ByteStringC& bsData,
                  uint32_t dwStartPos);
   void OnTagClose(void* pTag, uint32_t dwEndPos);
   void OnTagEnd(void* pTag,
                 const CFX_ByteStringC& bsTagName,
                 uint32_t dwEndPos);
 
   void OnTargetData(void* pTag,
-                    FX_SAXNODE eType,
+                    CFX_SAXItem::Type eType,
                     const CFX_ByteStringC& bsData,
                     uint32_t dwStartPos);
 
  protected:
   void UpdateChecksum(FX_BOOL bCheckSpace);
 
   CXFA_ChecksumContext* m_pContext;
   CXFA_SAXContext m_SAXContext;
 };
 
@@ skipping 10 matching lines @@
   void FinishChecksum();
   CFX_ByteString GetChecksum() const;
 
  protected:
   CFX_SAXReader* m_pSAXReader;
   uint8_t* m_pByteContext;
   CFX_ByteString m_bsChecksum;
 };
 
 #endif  // XFA_FXFA_INCLUDE_XFA_CHECKSUM_H_