Return unique_ptrs from CFX_DIBitmap::Clone().

core/fxcodec/codec/fx_codec_progress.cpp

 // 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
 
 #include "core/fxcodec/codec/ccodec_progressivedecoder.h"
 
 #include <algorithm>
+#include <memory>
 
 #include "core/fxcodec/fx_codec.h"
 #include "core/fxge/fx_dib.h"
 #include "third_party/base/numerics/safe_math.h"
 
 #define FXCODEC_BLOCK_SIZE 4096
 
 namespace {
 
 #if _FX_OS_ == _FX_MACOSX_ || _FX_OS_ == _FX_IOS_
@@ skipping 2234 matching lines @@
         delete pDIBitmap;
         m_pDeviceBitmap = nullptr;
         m_pFile = nullptr;
         m_status = FXCODEC_STATUS_ERROR;
         return m_status;
       }
       CFX_DIBitmap* pClipBitmap =
           (m_clipBox.left == 0 && m_clipBox.top == 0 &&
            m_clipBox.right == m_SrcWidth && m_clipBox.bottom == m_SrcHeight)
               ? pDIBitmap
-              : pDIBitmap->Clone(&m_clipBox);
+              : pDIBitmap->Clone(&m_clipBox).release();
       if (pDIBitmap != pClipBitmap) {
         delete pDIBitmap;
       }
       if (!pClipBitmap) {
         m_pDeviceBitmap = nullptr;
         m_pFile = nullptr;
         m_status = FXCODEC_STATUS_ERR_MEMORY;
         return m_status;
       }
       CFX_DIBitmap* pFormatBitmap = nullptr;
@@ skipping 64 matching lines @@
       }
       if (pClipBitmap != pFormatBitmap) {
         delete pClipBitmap;
       }
       if (!pFormatBitmap) {
         m_pDeviceBitmap = nullptr;
         m_pFile = nullptr;
         m_status = FXCODEC_STATUS_ERR_MEMORY;
         return m_status;
       }
-      CFX_DIBitmap* pStrechBitmap = pFormatBitmap->StretchTo(
+      std::unique_ptr<CFX_DIBitmap> pStrechBitmap = pFormatBitmap->StretchTo(
           m_sizeX, m_sizeY, m_bInterpol ? FXDIB_INTERPOL : FXDIB_DOWNSAMPLE);
       delete pFormatBitmap;
       pFormatBitmap = nullptr;
       if (!pStrechBitmap) {
         m_pDeviceBitmap = nullptr;
         m_pFile = nullptr;
         m_status = FXCODEC_STATUS_ERR_MEMORY;
         return m_status;
       }
       m_pDeviceBitmap->TransferBitmap(m_startX, m_startY, m_sizeX, m_sizeY,
-                                      pStrechBitmap, 0, 0);
-      delete pStrechBitmap;
-      pStrechBitmap = nullptr;
+                                      pStrechBitmap.get(), 0, 0);
       m_pDeviceBitmap = nullptr;
       m_pFile = nullptr;
       m_status = FXCODEC_STATUS_DECODE_FINISH;
       return m_status;
     }
     default:
       return FXCODEC_STATUS_ERROR;
   }
 }
 
 CCodec_ProgressiveDecoder* CCodec_ModuleMgr::CreateProgressiveDecoder() {
   return new CCodec_ProgressiveDecoder(this);
 }