Return unique_ptrs from CFX_DIBitmap::Clone().

core/fpdfapi/render/cpdf_imagerenderer.cpp

 // Copyright 2016 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/fpdfapi/render/cpdf_imagerenderer.h"
 
 #include <algorithm>
 #include <memory>
@@ skipping 76 matching lines @@
       m_pImageObject->m_GeneralState.SetTransferFunc(
           m_pRenderStatus->GetTransferFunc(
               m_pImageObject->m_GeneralState.GetTR()));
     }
     if (m_pImageObject->m_GeneralState.GetTransferFunc() &&
         !m_pImageObject->m_GeneralState.GetTransferFunc()->m_bIdentity) {
       m_pDIBSource = m_Loader.m_pBitmap =
           m_pImageObject->m_GeneralState.GetTransferFunc()->TranslateImage(
               m_Loader.m_pBitmap, !m_Loader.m_bCached);
       if (m_Loader.m_bCached && m_Loader.m_pMask)
-        m_Loader.m_pMask = m_Loader.m_pMask->Clone();
+        m_Loader.m_pMask = m_Loader.m_pMask->Clone().release();
       m_Loader.m_bCached = false;
     }
   }
   m_FillArgb = 0;
   m_bPatternColor = false;
   m_pPattern = nullptr;
   if (m_pDIBSource->IsAlphaMask()) {
     const CPDF_Color* pColor = m_pImageObject->m_ColorState.GetFillColor();
     if (pColor && pColor->IsPattern()) {
       m_pPattern = pColor->GetPattern();
       if (m_pPattern)
         m_bPatternColor = true;
     }
     m_FillArgb = m_pRenderStatus->GetFillArgb(m_pImageObject);
   } else if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_GRAY) {
-    m_pClone.reset(m_pDIBSource->Clone());
+    m_pClone = m_pDIBSource->Clone();
     m_pClone->ConvertColorScale(m_pRenderStatus->m_Options.m_BackColor,
                                 m_pRenderStatus->m_Options.m_ForeColor);
     m_pDIBSource = m_pClone.get();
   }
   m_Flags = 0;
   if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_DOWNSAMPLE)
     m_Flags |= RENDER_FORCE_DOWNSAMPLE;
   else if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_HALFTONE)
     m_Flags |= RENDER_FORCE_HALFTONE;
   if (m_pRenderStatus->m_pDevice->GetDeviceClass() != FXDC_DISPLAY) {
@@ skipping 269 matching lines @@
     image_size *= m_pDIBSource->GetHeight();
     if (!image_size.IsValid())
       return false;
 
     if (image_size.ValueOrDie() > FPDF_HUGE_IMAGE_SIZE &&
         !(m_Flags & RENDER_FORCE_HALFTONE)) {
       m_Flags |= RENDER_FORCE_DOWNSAMPLE;
     }
   }
 #ifdef _SKIA_SUPPORT_
-  CFX_DIBitmap* premultiplied = m_pDIBSource->Clone();
+  CFX_DIBitmap* premultiplied = m_pDIBSource->Clone().release();
   if (m_pDIBSource->HasAlpha())
     CFX_SkiaDeviceDriver::PreMultiply(premultiplied);
   if (m_pRenderStatus->m_pDevice->StartDIBitsWithBlend(
           premultiplied, m_BitmapAlpha, m_FillArgb, &m_ImageMatrix, m_Flags,
           m_DeviceHandle, m_BlendType)) {
     if (m_DeviceHandle) {
       m_Status = 3;
       return true;
     }
     return false;
@@ skipping 144 matching lines @@
 
   if (m_Status == 4) {
     if (m_Loader.Continue(pPause))
       return true;
 
     if (StartRenderDIBSource())
       return Continue(pPause);
   }
   return false;
 }