Fix ALL the include guards.

core/src/fpdftext/text_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 _PDF_TEXT_INT_H_
-#define _PDF_TEXT_INT_H_
+#ifndef CORE_SRC_FPDFTEXT_TEXT_INT_H_
+#define CORE_SRC_FPDFTEXT_TEXT_INT_H_
+
 class CPDF_TextParseOptions 
 {
 public:
     CPDF_TextParseOptions();
     FX_BOOL                     m_bCheckObjectOrder;
     FX_BOOL                     m_bCheckDirection;
     int                         m_nCheckSameObject;
 };
 class CPDF_TextPage;
 class CPDF_LinkExtract;
@@ skipping 191 matching lines @@
     FX_BOOL                                                     AppendToLinkList(int start, int count, const CFX_WideString& strUrl);
 private:
     LINK_InfoArray                                      m_LinkList;
     const CPDF_TextPage*                        m_pTextPage;
     CFX_WideString                                      m_strPageText;
     FX_BOOL                                                     m_IsParserd;
 };
 FX_STRSIZE FX_Unicode_GetNormalization(FX_WCHAR wch, FX_LPWSTR pDst);
 void NormalizeString(CFX_WideString& str);
 void NormalizeCompositeChar(FX_WCHAR wChar, CFX_WideString& sDest);
-#endif
+
+#endif  // CORE_SRC_FPDFTEXT_TEXT_INT_H_