Tidy public/ directory.

public/fpdf_searchex.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_SEARCH_EX_H
-#define _FPDF_SEARCH_EX_H
-        
-#ifndef _FPDFVIEW_H_
+#ifndef PUBLIC_FPDF_SEARCHEX_H_
+#define PUBLIC_FPDF_SEARCHEX_H_
+
 #include "fpdfview.h"
-#endif
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 // Function: FPDFText_GetCharIndexFromTextIndex
-//              Get the actually char index in text_page's internal char list.
+//      Get the actually char index in text_page's internal char list.
 // Parameters:
-//                      text_page       -       Handle to a text page information structure. Returned by FPDFText_LoadPage function.
-//                      nTextIndex      -       The index of the text in the string get from FPDFText_GetText.
-//      Return value:
-//                      The index of the character in internal charlist. -1 for error.
+//          text_page   -   Handle to a text page information structure. Returned by FPDFText_LoadPage function.
+//          nTextIndex  -   The index of the text in the string get from FPDFText_GetText.
+//  Return value:
+//          The index of the character in internal charlist. -1 for error.
 DLLEXPORT int STDCALL  FPDFText_GetCharIndexFromTextIndex(FPDF_TEXTPAGE text_page, int nTextIndex);
 
 #ifdef __cplusplus
-};
+}
 #endif
 
-
-#endif
-
+#endif  // PUBLIC_FPDF_SEARCHEX_H_