Use smart pointers for class owned member variables

core/fpdfapi/fpdf_render/render_int.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_FPDFAPI_FPDF_RENDER_RENDER_INT_H_
 #define CORE_FPDFAPI_FPDF_RENDER_RENDER_INT_H_
 
 #include <map>
@@ skipping 275 matching lines @@
       : m_pBitmap(nullptr),
         m_pMask(nullptr),
         m_MatteColor(0),
         m_bCached(FALSE),
         m_nDownsampleWidth(0),
         m_nDownsampleHeight(0) {}
   ~CPDF_ImageLoader();
 
   FX_BOOL Start(const CPDF_ImageObject* pImage,
                 CPDF_PageRenderCache* pCache,
-                CPDF_ImageLoaderHandle*& LoadHandle,
+                std::unique_ptr<CPDF_ImageLoaderHandle>* pLoadHandle,
                 FX_BOOL bStdCS = FALSE,
                 uint32_t GroupFamily = 0,
                 FX_BOOL bLoadMask = FALSE,
                 CPDF_RenderStatus* pRenderStatus = nullptr,
                 int32_t nDownsampleWidth = 0,
                 int32_t nDownsampleHeight = 0);
   FX_BOOL Continue(CPDF_ImageLoaderHandle* LoadHandle, IFX_Pause* pPause);
 
   CFX_DIBSource* m_pBitmap;
   CFX_DIBSource* m_pMask;
@@ skipping 59 matching lines @@
   FX_BOOL DrawMaskedImage();
   FX_BOOL DrawPatternImage(const CFX_Matrix* pObj2Device);
 
   CPDF_RenderStatus* m_pRenderStatus;
   const CPDF_ImageObject* m_pImageObject;
   int m_Status;
   const CFX_Matrix* m_pObj2Device;
   CFX_Matrix m_ImageMatrix;
   CPDF_ImageLoader m_Loader;
   const CFX_DIBSource* m_pDIBSource;
-  CFX_DIBitmap* m_pClone;
+  std::unique_ptr<CFX_DIBitmap> m_pClone;
   int m_BitmapAlpha;
   FX_BOOL m_bPatternColor;
   CPDF_Pattern* m_pPattern;
   FX_ARGB m_FillArgb;
   uint32_t m_Flags;
-  CFX_ImageTransformer* m_pTransformer;
+  std::unique_ptr<CFX_ImageTransformer> m_pTransformer;
   void* m_DeviceHandle;
-  CPDF_ImageLoaderHandle* m_LoadHandle;
+  std::unique_ptr<CPDF_ImageLoaderHandle> m_LoadHandle;
   FX_BOOL m_bStdCS;
   int m_BlendType;
 };
 
 class CPDF_ScaledRenderBuffer {
  public:
   CPDF_ScaledRenderBuffer();
   ~CPDF_ScaledRenderBuffer();
 
   FX_BOOL Initialize(CPDF_RenderContext* pContext,
@@ skipping 228 matching lines @@
                             const uint8_t* src_buf,
                             int pixels,
                             int Bpp) const override;
 
   const uint8_t* m_RampR;
   const uint8_t* m_RampG;
   const uint8_t* m_RampB;
 };
 
 #endif  // CORE_FPDFAPI_FPDF_RENDER_RENDER_INT_H_