Split off IPDF_SecurityHandler and CPDF_StandardSecurityHandler.

core/src/fpdfapi/fpdf_parser/cpdf_parser.cpp

 // Copyright 2016 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 "core/include/fpdfapi/cpdf_parser.h"
 
 #include "core/include/fpdfapi/cpdf_document.h"
 #include "core/include/fpdfapi/fpdf_parser.h"
 #include "core/include/fxcrt/fx_ext.h"
 #include "core/include/fxcrt/fx_safe_types.h"
+#include "core/src/fpdfapi/fpdf_parser/cpdf_standard_security_handler.h"
 #include "core/src/fpdfapi/fpdf_parser/cpdf_syntax_parser.h"
 #include "core/src/fpdfapi/fpdf_parser/fpdf_parser_utility.h"
 #include "third_party/base/stl_util.h"
 
 namespace {
 
 // A limit on the size of the xref table. Theoretical limits are higher, but
 // this may be large enough in practice.
 const int32_t kMaxXRefSize = 1048576;
 
@@ skipping 1611 matching lines @@
   if (!LoadLinearizedAllCrossRefV4(m_LastXRefOffset, m_dwXrefStartObjNum) &&
       !LoadLinearizedAllCrossRefV5(m_LastXRefOffset)) {
     m_LastXRefOffset = 0;
     m_pSyntax->m_MetadataObjnum = dwSaveMetadataObjnum;
     return FORMAT_ERROR;
   }
 
   m_pSyntax->m_MetadataObjnum = dwSaveMetadataObjnum;
   return SUCCESS;
 }