Use smart pointers for graphics device classes

core/fxge/win32/fx_win32_device.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/fxge/include/fx_ge.h"
 
 #include <algorithm>
 #include <memory>
@@ skipping 1235 matching lines @@
         !GetDIBits(&bitmap, left, top) ||
         !bitmap.CompositeBitmap(0, 0, width, height, pSource, pSrcRect->left,
                                 pSrcRect->top, FXDIB_BLEND_NORMAL, nullptr,
                                 FALSE, nullptr)) {
       return FALSE;
     }
     FX_RECT src_rect(0, 0, width, height);
     return SetDIBits(&bitmap, 0, &src_rect, left, top, FXDIB_BLEND_NORMAL);
   }
   CFX_DIBExtractor temp(pSource);
-  CFX_DIBitmap* pBitmap = temp;
+  CFX_DIBitmap* pBitmap = temp.GetBitmap();
   if (!pBitmap)
     return FALSE;
   return GDI_SetDIBits(pBitmap, pSrcRect, left, top);
 }
 
 FX_BOOL CGdiDisplayDriver::UseFoxitStretchEngine(const CFX_DIBSource* pSource,
                                                  uint32_t color,
                                                  int dest_left,
                                                  int dest_top,
                                                  int dest_width,
@@ skipping 61 matching lines @@
     FX_RECT src_rect(0, 0, clip_width, clip_height);
     return SetDIBits(&background, 0, &src_rect,
                      image_rect.left + clip_rect.left,
                      image_rect.top + clip_rect.top, FXDIB_BLEND_NORMAL);
   }
   if (pSource->HasAlpha()) {
     CWin32Platform* pPlatform =
         (CWin32Platform*)CFX_GEModule::Get()->GetPlatformData();
     if (pPlatform->m_GdiplusExt.IsAvailable() && !pSource->IsCmykImage()) {
       CFX_DIBExtractor temp(pSource);
-      CFX_DIBitmap* pBitmap = temp;
+      CFX_DIBitmap* pBitmap = temp.GetBitmap();
       if (!pBitmap)
         return FALSE;
       return pPlatform->m_GdiplusExt.StretchDIBits(
           m_hDC, pBitmap, dest_left, dest_top, dest_width, dest_height,
           pClipRect, flags);
     }
     return UseFoxitStretchEngine(pSource, color, dest_left, dest_top,
                                  dest_width, dest_height, pClipRect, flags);
   }
   CFX_DIBExtractor temp(pSource);
-  CFX_DIBitmap* pBitmap = temp;
+  CFX_DIBitmap* pBitmap = temp.GetBitmap();
   if (!pBitmap)
     return FALSE;
   return GDI_StretchDIBits(pBitmap, dest_left, dest_top, dest_width,
                            dest_height, flags);
 }
 
 FX_BOOL CGdiDisplayDriver::StartDIBits(const CFX_DIBSource* pBitmap,
                                        int bitmap_alpha,
                                        uint32_t color,
                                        const CFX_Matrix* pMatrix,
@@ skipping 55 matching lines @@
   if (m_hDC) {
     SelectObject(m_hDC, m_hOldBitmap);
     DeleteDC(m_hDC);
   }
   if (m_hBitmap)
     DeleteObject(m_hBitmap);
   delete GetBitmap();
 }
 
 #endif  // _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_