Use smart pointers for class owned pointers under xfa/fde

xfa/fde/css/fde_cssstyleselector.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_FDE_CSS_FDE_CSSSTYLESELECTOR_H_
 #define XFA_FDE_CSS_FDE_CSSSTYLESELECTOR_H_
 
+#include <memory>
 #include <vector>
 
 #include "core/fxcrt/include/fx_ext.h"
 #include "xfa/fde/css/fde_css.h"
 #include "xfa/fde/css/fde_csscache.h"
 #include "xfa/fde/css/fde_cssdeclaration.h"
 #include "xfa/fgas/crt/fgas_memory.h"
 #include "xfa/fgas/crt/fgas_system.h"
 
 class CFDE_CSSAccelerator;
 class CFDE_CSSComputedStyle;
 class CXFA_CSSTagProvider;
 
 class FDE_CSSRuleData : public CFX_Target {
  public:
   FDE_CSSRuleData(CFDE_CSSSelector* pSel,
                   CFDE_CSSDeclaration* pDecl,
                   uint32_t dwPos);
 
-  CFDE_CSSSelector* pSelector;
-  CFDE_CSSDeclaration* pDeclaration;
+  CFDE_CSSSelector* const pSelector;
+  CFDE_CSSDeclaration* const pDeclaration;
   uint32_t dwPriority;
   FDE_CSSRuleData* pNext;
 };
 
 class CFDE_CSSRuleCollection : public CFX_Target {
  public:
   CFDE_CSSRuleCollection();
   ~CFDE_CSSRuleCollection() override;
 
   void AddRulesFrom(const CFDE_CSSStyleSheetArray& sheets,
@@ skipping 126 matching lines @@
   FDE_CSSCURSOR ToCursor(FDE_CSSPROPERTYVALUE eValue);
   FDE_CSSPOSITION ToPosition(FDE_CSSPROPERTYVALUE eValue);
   FDE_CSSCAPTIONSIDE ToCaptionSide(FDE_CSSPROPERTYVALUE eValue);
   FDE_CSSBKGREPEAT ToBKGRepeat(FDE_CSSPROPERTYVALUE eValue);
   FDE_CSSBKGATTACHMENT ToBKGAttachment(FDE_CSSPROPERTYVALUE eValue);
   FDE_CSSRUBYALIGN ToRubyAlign(FDE_CSSPROPERTYVALUE eValue);
   FDE_CSSRUBYOVERHANG ToRubyOverhang(FDE_CSSPROPERTYVALUE eValue);
   FDE_CSSRUBYPOSITION ToRubyPosition(FDE_CSSPROPERTYVALUE eValue);
   FDE_CSSRUBYSPAN ToRubySpan(FDE_CSSPROPERTYVALUE eValue);
 
-  IFGAS_FontMgr* m_pFontMgr;
+  IFGAS_FontMgr* m_pFontMgr;  // not owned.
   FX_FLOAT m_fDefFontSize;
-  IFX_MemoryAllocator* m_pRuleDataStore;
+  std::unique_ptr<IFX_MemoryAllocator> m_pRuleDataStore;
   CFDE_CSSStyleSheetArray m_SheetGroups[FDE_CSSSTYLESHEETGROUP_MAX];
   CFDE_CSSRuleCollection m_RuleCollection[FDE_CSSSTYLESHEETGROUP_MAX];
   FDE_CSSSTYLESHEETGROUP m_ePriorities[FDE_CSSSTYLESHEETPRIORITY_MAX];
-  IFX_MemoryAllocator* m_pInlineStyleStore;
-  IFX_MemoryAllocator* m_pFixedStyleStore;
-  CFDE_CSSAccelerator* m_pAccelerator;
+  std::unique_ptr<IFX_MemoryAllocator> m_pInlineStyleStore;
+  std::unique_ptr<IFX_MemoryAllocator> m_pFixedStyleStore;
+  std::unique_ptr<CFDE_CSSAccelerator> m_pAccelerator;
   std::vector<FDE_CSSRuleData*> m_MatchedRules;
 };
 
 struct FDE_CSSCOUNTERDATA {
  public:
   FDE_CSSCOUNTERDATA() { FXSYS_memset(this, 0, sizeof(FDE_CSSCOUNTERDATA)); }
   FX_BOOL GetCounterIncrement(int32_t& iValue) {
     iValue = m_iIncVal;
     return m_bIncrement;
   }
@@ skipping 210 matching lines @@
   void SetLineHeight(FX_FLOAT fLineHeight) override;
   void SetTextIndent(const FDE_CSSLENGTH& textIndent) override;
   void SetTextAlign(FDE_CSSTEXTALIGN eTextAlign) override;
   void SetNumberVerticalAlign(FX_FLOAT fAlign) override;
   void SetTextDecoration(uint32_t dwTextDecoration) override;
   void SetLetterSpacing(const FDE_CSSLENGTH& letterSpacing) override;
   void AddCustomStyle(const CFX_WideString& wsName,
                       const CFX_WideString& wsValue);
 
   uint32_t m_dwRefCount;
-  IFX_MemoryAllocator* m_pAllocator;
+  IFX_MemoryAllocator* const m_pAllocator;
   CFDE_CSSInheritedData m_InheritedData;
   CFDE_CSSNonInheritedData m_NonInheritedData;
   CFX_WideStringArray m_CustomProperties;
 };
 
 #endif  // XFA_FDE_CSS_FDE_CSSSTYLESELECTOR_H_