Use smart pointers for class owned pointers in xfa/fxfa

xfa/fxfa/parser/xfa_locale.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 XFA_FXFA_PARSER_XFA_LOCALE_H_
 #define XFA_FXFA_PARSER_XFA_LOCALE_H_
 
+#include <memory>
+
 #include "xfa/fgas/localization/fgas_locale.h"
 #include "xfa/fxfa/parser/xfa_object.h"
 
 class CXFA_XMLLocale : public IFX_Locale {
  public:
-  CXFA_XMLLocale(CXML_Element* pLocaleData);
+  explicit CXFA_XMLLocale(std::unique_ptr<CXML_Element> pLocaleData);
 
   // IFX_Locale
   void Release() override;
   CFX_WideString GetName() override;
   void GetNumbericSymbol(FX_LOCALENUMSYMBOL eType,
                          CFX_WideString& wsNumSymbol) const override;
 
   void GetDateTimeSymbols(CFX_WideString& wsDtSymbol) const override;
   void GetMonthName(int32_t nMonth,
                     CFX_WideString& wsMonthName,
@@ skipping 18 matching lines @@
 
   void GetPattern(CXML_Element* pElement,
                   const CFX_ByteStringC& bsTag,
                   const CFX_WideStringC& wsName,
                   CFX_WideString& wsPattern) const;
   CFX_WideString GetCalendarSymbol(const CFX_ByteStringC& symbol,
                                    int index,
                                    FX_BOOL bAbbr) const;
 
  private:
-  CXML_Element* m_pLocaleData;
+  std::unique_ptr<CXML_Element> m_pLocaleData;
 };
 
 class CXFA_NodeLocale : public IFX_Locale {
  public:
   CXFA_NodeLocale(CXFA_Node* pLocale);
 
   // IFX_Locale
   void Release() override;
   CFX_WideString GetName() override;
   void GetNumbericSymbol(FX_LOCALENUMSYMBOL eType,
@@ skipping 22 matching lines @@
   ~CXFA_NodeLocale() override;
 
   CXFA_Node* GetNodeByName(CXFA_Node* pParent,
                            const CFX_WideStringC& wsName) const;
   CFX_WideString GetSymbol(XFA_Element eElement,
                            const CFX_WideStringC& symbol_type) const;
   CFX_WideString GetCalendarSymbol(XFA_Element eElement,
                                    int index,
                                    FX_BOOL bAbbr) const;
 
-  CXFA_Node* m_pLocale;
+  CXFA_Node* const m_pLocale;
 };
 
 #endif  // XFA_FXFA_PARSER_XFA_LOCALE_H_