Fix ALL the include guards.

core/src/fpdfapi/fpdf_edit/editint.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 _FPDF_EDITINT_
-#define _FPDF_EDITINT_
+#ifndef CORE_SRC_FPDFAPI_FPDF_EDIT_EDITINT_H_
+#define CORE_SRC_FPDFAPI_FPDF_EDIT_EDITINT_H_
+
 class CPDF_ObjectStream 
 {
 public:
     CPDF_ObjectStream();
 
     FX_BOOL                             Start();
 
     FX_INT32                    CompressIndirectObject(FX_DWORD dwObjNum, const CPDF_Object *pObj);
     FX_INT32                    CompressIndirectObject(FX_DWORD dwObjNum, FX_LPCBYTE pBuffer, FX_DWORD dwSize);
 
@@ skipping 30 matching lines @@
     FX_FILESIZE                 m_PrevOffset;
     FX_DWORD                    m_dwTempObjNum;
 
 protected:
     FX_INT32                    EndObjectStream(CPDF_Creator *pCreator, FX_BOOL bEOF = TRUE);
     FX_BOOL                             GenerateXRefStream(CPDF_Creator* pCreator, FX_BOOL bEOF);
     FX_INT32                    m_iSeg;
     CPDF_ObjectStream   m_ObjStream;
     CFX_ByteTextBuf             m_Buffer;
 };
-#endif
+
+#endif  // CORE_SRC_FPDFAPI_FPDF_EDIT_EDITINT_H_