Use smart pointers for graphics device classes

core/fxge/skia/fx_skia_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.
 
 #if defined(_SKIA_SUPPORT_)
 #include <algorithm>
 #include <vector>
 
 #include "core/fxcodec/include/fx_codec.h"
+#include "core/fxcrt/include/fx_memory.h"
 
 #include "core/fpdfapi/fpdf_page/cpdf_shadingpattern.h"
 #include "core/fpdfapi/fpdf_page/pageint.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_stream_acc.h"
 #include "core/fxge/skia/fx_skia_device.h"
 
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkColorFilter.h"
@@ skipping 1434 matching lines @@
 void CFX_SkiaDeviceDriver::DebugVerifyBitmapIsPreMultiplied() const {
   if (m_pOriDevice)
     m_pOriDevice->DebugVerifyBitmapIsPreMultiplied();
 }
 
 CFX_FxgeDevice::CFX_FxgeDevice() {
   m_bOwnedBitmap = FALSE;
 }
 
 SkPictureRecorder* CFX_FxgeDevice::CreateRecorder(int size_x, int size_y) {
-  CFX_SkiaDeviceDriver* skDriver = new CFX_SkiaDeviceDriver(size_x, size_y);
-  SetDeviceDriver(skDriver);
+  SetDeviceDriver(WrapUnique(new CFX_SkiaDeviceDriver(size_x, size_y)));
   return skDriver->GetRecorder();
 }
 
 bool CFX_FxgeDevice::Attach(CFX_DIBitmap* pBitmap,
                             bool bRgbByteOrder,
                             CFX_DIBitmap* pOriDevice,
                             bool bGroupKnockout) {
   if (!pBitmap)
     return false;
   SetBitmap(pBitmap);
-  SetDeviceDriver(new CFX_SkiaDeviceDriver(pBitmap, bRgbByteOrder, pOriDevice,
-                                           bGroupKnockout));
+  SetDeviceDriver(WrapUnique(new CFX_SkiaDeviceDriver(
+      pBitmap, bRgbByteOrder, pOriDevice, bGroupKnockout)));
   return true;
 }
 
 bool CFX_FxgeDevice::AttachRecorder(SkPictureRecorder* recorder) {
   if (!recorder)
     return false;
   SetDeviceDriver(new CFX_SkiaDeviceDriver(recorder));
   return true;
 }
 
@@ skipping 47 matching lines @@
       SkA32Assert(a);
       SkASSERT(r <= a);
       SkASSERT(g <= a);
       SkASSERT(b <= a);
     }
   }
 #endif
 }
 
 #endif