Add FPDF_GetSecurityHandlerRevision

fpdfsdk/include/fpdfview.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 _FPDFVIEW_H_
 #define _FPDFVIEW_H_
 
@@ skipping 242 matching lines @@
 // Function: FPDF_GetDocPermission
 //                      Get file permission flags of the document.
 // Parameters: 
 //                      document        -       Handle to document. Returned by FPDF_LoadDocument function.
 // Return value:
 //                      A 32-bit integer indicating permission flags. Please refer to PDF Reference for
 //                      detailed description. If the document is not protected, 0xffffffff will be returned.
 //
 DLLEXPORT unsigned long STDCALL FPDF_GetDocPermissions(FPDF_DOCUMENT document);
 
+// Function: FPDF_GetSecurityHandlerRevision
+//                      Get the revision for security handler.
+// Parameters:
+//                      document        -       Handle to document. Returned by FPDF_LoadDocument function.
+// Return value:
+//                      The security handler revision number. Please refer to PDF Reference for
+//                      detailed description. If the document is not protected, -1 will be returned.
+//
+DLLEXPORT int STDCALL FPDF_GetSecurityHandlerRevision(FPDF_DOCUMENT document);
+
 // Function: FPDF_GetPageCount
 //                      Get total number of pages in a document.
 // Parameters: 
 //                      document        -       Handle to document. Returned by FPDF_LoadDocument function.
 // Return value:
 //                      Total number of pages in the document.
 //
 DLLEXPORT int STDCALL FPDF_GetPageCount(FPDF_DOCUMENT document);
 
 // Function: FPDF_LoadPage
@@ skipping 327 matching lines @@
 // Return value:
 //                      The handle of the dest.
 //
 DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDestByName(FPDF_DOCUMENT document,FPDF_BYTESTRING name);
 
 #ifdef __cplusplus
 };
 #endif
 
 #endif // _FPDFVIEW_H_