Distinguish between user and owner passwords.

core/fpdfapi/fpdf_parser/include/cpdf_parser.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_FPDFAPI_FPDF_PARSER_INCLUDE_CPDF_PARSER_H_
 #define CORE_FPDFAPI_FPDF_PARSER_INCLUDE_CPDF_PARSER_H_
 
 #include <map>
@@ skipping 20 matching lines @@
     FILE_ERROR,
     FORMAT_ERROR,
     PASSWORD_ERROR,
     HANDLER_ERROR
   };
 
   CPDF_Parser();
   ~CPDF_Parser();
 
   Error StartParse(IFX_FileRead* pFile);
-  uint32_t GetPermissions(FX_BOOL bCheckRevision = FALSE);
+  uint32_t GetPermissions() const;
 
   void SetPassword(const FX_CHAR* password) { m_Password = password; }
   CFX_ByteString GetPassword() { return m_Password; }
   CPDF_Dictionary* GetTrailer() const { return m_pTrailer; }
   FX_FILESIZE GetLastXRefOffset() const { return m_LastXRefOffset; }
   CPDF_Document* GetDocument() const { return m_pDocument; }
 
   uint32_t GetRootObjNum();
   uint32_t GetInfoObjNum();
   CPDF_Array* GetIDArray();
@@ skipping 115 matching lines @@
     kPostObjNum,
     kGenNum,
     kPostGenNum,
     kTrailer,
     kBeginObj,
     kEndObj
   };
 };
 
 #endif  // CORE_FPDFAPI_FPDF_PARSER_INCLUDE_CPDF_PARSER_H_