Use smart pointers for class owned member variables

core/fpdfdoc/include/fpdf_doc.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 CORE_FPDFDOC_INCLUDE_FPDF_DOC_H_
 #define CORE_FPDFDOC_INCLUDE_FPDF_DOC_H_
 
 #include <map>
@@ skipping 356 matching lines @@
 
   void DisplayAnnots(CPDF_Page* pPage,
                      CFX_RenderDevice* pDevice,
                      CPDF_RenderContext* pContext,
                      FX_BOOL bPrinting,
                      CFX_Matrix* pMatrix,
                      uint32_t dwAnnotFlags,
                      CPDF_RenderOptions* pOptions,
                      FX_RECT* pClipRect);
   size_t Count() const { return m_AnnotList.size(); }
-  CPDF_Annot* GetAt(size_t index) const { return m_AnnotList[index]; }
-  const std::vector<CPDF_Annot*>& All() const { return m_AnnotList; }
+  CPDF_Annot* GetAt(size_t index) const { return m_AnnotList[index].get(); }
+  const std::vector<std::unique_ptr<CPDF_Annot>>& All() const {
+    return m_AnnotList;
+  }
   CPDF_Document* GetDocument() const { return m_pDocument; }
 
  protected:
   void DisplayPass(CPDF_Page* pPage,
                    CFX_RenderDevice* pDevice,
                    CPDF_RenderContext* pContext,
                    FX_BOOL bPrinting,
                    CFX_Matrix* pMatrix,
                    FX_BOOL bWidget,
                    CPDF_RenderOptions* pOptions,
                    FX_RECT* clip_rect);
 
   CPDF_Document* const m_pDocument;
-  std::vector<CPDF_Annot*> m_AnnotList;
+  std::vector<std::unique_ptr<CPDF_Annot>> m_AnnotList;
 };
 
 #define COLORTYPE_TRANSPARENT 0
 #define COLORTYPE_GRAY 1
 #define COLORTYPE_RGB 2
 #define COLORTYPE_CMYK 3
 class CPDF_DefaultAppearance {
  public:
   CPDF_DefaultAppearance() {}
   explicit CPDF_DefaultAppearance(const CFX_ByteString& csDA) : m_csDA(csDA) {}
@@ skipping 525 matching lines @@
   CFX_WideString GetCaption(const CFX_ByteString& csEntry) const;
   CPDF_Stream* GetIcon(const CFX_ByteString& csEntry) const;
 
   CPDF_Dictionary* const m_pDict;
 };
 
 CPDF_Stream* FPDFDOC_GetAnnotAP(CPDF_Dictionary* pAnnotDict,
                                 CPDF_Annot::AppearanceMode mode);
 
 #endif  // CORE_FPDFDOC_INCLUDE_FPDF_DOC_H_