Make code compile with clang_use_chrome_plugin (part II)

core/fpdftext/include/cpdf_textpagefind.h

 // 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
 
 #ifndef CORE_FPDFTEXT_INCLUDE_CPDF_TEXTPAGEFIND_H_
 #define CORE_FPDFTEXT_INCLUDE_CPDF_TEXTPAGEFIND_H_
 
 #include <vector>
 
 #include "core/fxcrt/include/fx_coordinates.h"
 #include "core/fxcrt/include/fx_string.h"
 #include "core/fxcrt/include/fx_system.h"
 
 class CPDF_TextPage;
 
 class CPDF_TextPageFind {
  public:
   explicit CPDF_TextPageFind(const CPDF_TextPage* pTextPage);
-  ~CPDF_TextPageFind() {}
+  ~CPDF_TextPageFind();
 
   FX_BOOL FindFirst(const CFX_WideString& findwhat,
                     int flags,
                     int startPos = 0);
   FX_BOOL FindNext();
   FX_BOOL FindPrev();
   int GetCurOrder() const;
   int GetMatchedCount() const;
 
  protected:
   void ExtractFindWhat(const CFX_WideString& findwhat);
   FX_BOOL IsMatchWholeWord(const CFX_WideString& csPageText,
                            int startPos,
                            int endPos);
   FX_BOOL ExtractSubString(CFX_WideString& rString,
                            const FX_WCHAR* lpszFullString,
                            int iSubString,
                            FX_WCHAR chSep);
   CFX_WideString MakeReverse(const CFX_WideString& str);
-  int ReverseFind(const CFX_WideString& csPageText,
-                  const CFX_WideString& csWord,
-                  int nStartPos,
-                  int& WordLength);
   int GetCharIndex(int index) const;
 
  private:
   std::vector<uint16_t> m_CharIndex;
   const CPDF_TextPage* m_pTextPage;
   CFX_WideString m_strText;
   CFX_WideString m_findWhat;
   int m_flags;
   std::vector<CFX_WideString> m_csFindWhatArray;
   int m_findNextStart;
   int m_findPreStart;
   FX_BOOL m_bMatchCase;
   FX_BOOL m_bMatchWholeWord;
   int m_resStart;
   int m_resEnd;
   std::vector<CFX_FloatRect> m_resArray;
   FX_BOOL m_IsFind;
 };
 
 #endif  // CORE_FPDFTEXT_INCLUDE_CPDF_TEXTPAGEFIND_H_