Fix relative includes within core/

core/src/fxcrt/xml_int.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 CORE_SRC_FXCRT_XML_INT_H_
 #define CORE_SRC_FXCRT_XML_INT_H_
 
-#include "../../include/fxcrt/fx_stream.h"
+#include "core/include/fxcrt/fx_stream.h"
+
+class CFX_UTF8Decoder;
+class CXML_Element;
 
 class CXML_DataBufAcc : public IFX_BufferRead {
  public:
   CXML_DataBufAcc(const uint8_t* pBuffer, size_t size)
       : m_pBuffer(pBuffer), m_dwSize(size), m_dwCurPos(0) {}
   ~CXML_DataBufAcc() override {}
 
   // IFX_BufferRead
   void Release() override { delete this; }
   FX_BOOL IsEOF() override { return m_dwCurPos >= m_dwSize; }
@@ skipping 94 matching lines @@
                             const CFX_WideStringC& content,
                             CXML_Element* pElement);
   void InsertCDATASegment(CFX_UTF8Decoder& decoder, CXML_Element* pElement);
 };
 
 void FX_XML_SplitQualifiedName(const CFX_ByteStringC& bsFullName,
                                CFX_ByteStringC& bsSpace,
                                CFX_ByteStringC& bsName);
 
 #endif  // CORE_SRC_FXCRT_XML_INT_H_