Tidy public/ directory.

public/fpdf_flatten.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_FLATTEN_H_
-#define _FPDF_FLATTEN_H_
-        
+#ifndef PUBLIC_FPDF_FLATTEN_H_
+#define PUBLIC_FPDF_FLATTEN_H_
+
 #include "fpdfview.h"
 
-#define FLATTEN_FAIL                    0       // Flatten operation failed.
-#define FLATTEN_SUCCESS                 1       // Flatten operation succeed.
-#define FLATTEN_NOTINGTODO              2       // There is nothing can be flatten.
-        
+#define FLATTEN_FAIL            0   // Flatten operation failed.
+#define FLATTEN_SUCCESS         1   // Flatten operation succeed.
+#define FLATTEN_NOTINGTODO      2   // There is nothing can be flatten.
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #define FLAT_NORMALDISPLAY     0
-#define FLAT_PRINT             1    
-        //Function: FPDFPage_Flatten
+#define FLAT_PRINT             1
+    //Function: FPDFPage_Flatten
 
-        //                      Flat a pdf page,annotations or form fields will become part of the page contents.
-        //Parameters:
+    //          Flat a pdf page,annotations or form fields will become part of the page contents.
+    //Parameters:
 
-        //                      page  - Handle to the page. Returned by FPDF_LoadPage function.
-        //                      nFlag - the flag for the use of flatten result. Zero for normal display, 1 for print.
-        //Return value:
-        //                      The result flag of the function, See flags above ( FLATTEN_FAIL, FLATTEN_SUCCESS, FLATTEN_NOTINGTODO ).
-        //
-        // Comments: Current version all fails return zero. If necessary we will assign different value
-        //                      to indicate different fail reason.
-        // 
-        DLLEXPORT int STDCALL FPDFPage_Flatten( FPDF_PAGE page, int nFlag);
-                
-                
+    //          page  - Handle to the page. Returned by FPDF_LoadPage function.
+    //          nFlag - the flag for the use of flatten result. Zero for normal display, 1 for print.
+    //Return value:
+    //          The result flag of the function, See flags above ( FLATTEN_FAIL, FLATTEN_SUCCESS, FLATTEN_NOTINGTODO ).
+    //
+    // Comments: Current version all fails return zero. If necessary we will assign different value
+    //          to indicate different fail reason.
+    //
+    DLLEXPORT int STDCALL FPDFPage_Flatten( FPDF_PAGE page, int nFlag);
+
+
 #ifdef __cplusplus
-};
+}
 #endif
 
-#endif //_FPDF_FLATTEN_H_
+#endif  // PUBLIC_FPDF_FLATTEN_H_