Remove IXFA_* interfaces.

xfa/fxfa/app/xfa_checksum.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/app/xfa_checksum.h"
+#include "xfa/include/fxfa/xfa_checksum.h"
 
 #include "core/fdrm/crypto/include/fx_crypt.h"
 #include "xfa/fgas/crt/fgas_algorithm.h"
 
 CXFA_SAXReaderHandler::CXFA_SAXReaderHandler(CXFA_ChecksumContext* pContext)
     : m_pContext(pContext) {
   FXSYS_assert(m_pContext);
 }
 CXFA_SAXReaderHandler::~CXFA_SAXReaderHandler() {}
 void* CXFA_SAXReaderHandler::OnTagEnter(const CFX_ByteStringC& bsTagName,
@@ skipping 99 matching lines @@
       if (bUpdata) {
         break;
       }
     }
   }
   if (bUpdata) {
     m_pContext->Update(CFX_ByteStringC(pBuffer, iLength));
   }
   m_SAXContext.m_TextBuf.Clear();
 }
-IXFA_ChecksumContext* XFA_Checksum_Create() {
-  return new CXFA_ChecksumContext;
-}
+
 CXFA_ChecksumContext::CXFA_ChecksumContext()
     : m_pSAXReader(NULL), m_pByteContext(NULL) {}
 CXFA_ChecksumContext::~CXFA_ChecksumContext() {
   FinishChecksum();
 }
 FX_BOOL CXFA_ChecksumContext::StartChecksum() {
   FinishChecksum();
   m_pByteContext = FX_Alloc(uint8_t, 128);
   CRYPT_SHA1Start(m_pByteContext);
   m_bsChecksum.Empty();
@@ skipping 41 matching lines @@
   }
 }
 void CXFA_ChecksumContext::GetChecksum(CFX_ByteString& bsChecksum) {
   bsChecksum = m_bsChecksum;
 }
 void CXFA_ChecksumContext::Update(const CFX_ByteStringC& bsText) {
   if (m_pByteContext) {
     CRYPT_SHA1Update(m_pByteContext, bsText.GetPtr(), bsText.GetLength());
   }
 }