Change CPDF_Boolean to use bool instead of FX_BOOL.

core/fpdfapi/fpdf_parser/cpdf_security_handler.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_CPDF_SECURITY_HANDLER_H_
 #define CORE_FPDFAPI_FPDF_PARSER_CPDF_SECURITY_HANDLER_H_
 
 #include "core/fxcrt/include/fx_string.h"
@@ skipping 12 matching lines @@
 class CPDF_Parser;
 
 class CPDF_SecurityHandler {
  public:
   CPDF_SecurityHandler();
   ~CPDF_SecurityHandler();
 
   FX_BOOL OnInit(CPDF_Parser* pParser, CPDF_Dictionary* pEncryptDict);
   uint32_t GetPermissions();
   FX_BOOL GetCryptInfo(int& cipher, const uint8_t*& buffer, int& keylen);
-  FX_BOOL IsMetadataEncrypted();
+  bool IsMetadataEncrypted() const;
   CPDF_CryptoHandler* CreateCryptoHandler();
 
   void OnCreate(CPDF_Dictionary* pEncryptDict,
                 CPDF_Array* pIdArray,
                 const uint8_t* user_pass,
                 uint32_t user_size,
                 const uint8_t* owner_pass,
                 uint32_t owner_size,
                 uint32_t type = PDF_ENCRYPT_CONTENT);
 
@@ skipping 57 matching lines @@
   CPDF_Parser* m_pParser;
   CPDF_Dictionary* m_pEncryptDict;
   uint32_t m_Permissions;
   int m_Cipher;
   uint8_t m_EncryptKey[32];
   int m_KeyLen;
   bool m_bOwnerUnlocked;
 };
 
 #endif  // CORE_FPDFAPI_FPDF_PARSER_CPDF_SECURITY_HANDLER_H_