Fix relative includes within core/

core/src/fxcodec/jbig2/JBig2_SymbolDict.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 "JBig2_SymbolDict.h"
 
-#include "../../../include/fxcrt/fx_memory.h"
 #include "JBig2_Image.h"
+#include "core/include/fxcrt/fx_memory.h"
 
 CJBig2_SymbolDict::CJBig2_SymbolDict() {
 }
 
 CJBig2_SymbolDict::~CJBig2_SymbolDict() {
 }
 
 nonstd::unique_ptr<CJBig2_SymbolDict> CJBig2_SymbolDict::DeepCopy() const {
   const CJBig2_SymbolDict* src = this;
   nonstd::unique_ptr<CJBig2_SymbolDict> dst(new CJBig2_SymbolDict);
   for (size_t i = 0; i < src->m_SDEXSYMS.size(); ++i) {
     CJBig2_Image* image = src->m_SDEXSYMS.get(i);
     dst->m_SDEXSYMS.push_back(image ? new CJBig2_Image(*image) : nullptr);
   }
   dst->m_gbContext = src->m_gbContext;
   dst->m_grContext = src->m_grContext;
   return dst;
 }