Avoid the ptr.reset(new XXX()) anti-pattern

core/fpdfapi/render/cpdf_progressiverenderer.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_progressiverenderer.h"
 
 #include "core/fpdfapi/page/cpdf_pageobject.h"
 #include "core/fpdfapi/page/cpdf_pageobjectholder.h"
 #include "core/fpdfapi/render/cpdf_pagerendercache.h"
 #include "core/fpdfapi/render/cpdf_renderoptions.h"
 #include "core/fpdfapi/render/cpdf_renderstatus.h"
 #include "core/fxge/cfx_renderdevice.h"
+#include "third_party/base/ptr_util.h"
 
 CPDF_ProgressiveRenderer::CPDF_ProgressiveRenderer(
     CPDF_RenderContext* pContext,
     CFX_RenderDevice* pDevice,
     const CPDF_RenderOptions* pOptions)
     : m_Status(Ready),
       m_pContext(pContext),
       m_pDevice(pDevice),
       m_pOptions(pOptions),
       m_LayerIndex(0),
@@ skipping 16 matching lines @@
 void CPDF_ProgressiveRenderer::Continue(IFX_Pause* pPause) {
   while (m_Status == ToBeContinued) {
     if (!m_pCurrentLayer) {
       if (m_LayerIndex >= m_pContext->CountLayers()) {
         m_Status = Done;
         return;
       }
       m_pCurrentLayer = m_pContext->GetLayer(m_LayerIndex);
       m_LastObjectRendered =
           m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()->end();
-      m_pRenderStatus.reset(new CPDF_RenderStatus());
+      m_pRenderStatus = pdfium::MakeUnique<CPDF_RenderStatus>();
       m_pRenderStatus->Initialize(
           m_pContext, m_pDevice, nullptr, nullptr, nullptr, nullptr, m_pOptions,
           m_pCurrentLayer->m_pObjectHolder->m_Transparency, false, nullptr);
       m_pDevice->SaveState();
       m_ClipRect = CFX_FloatRect(m_pDevice->GetClipBox());
       CFX_Matrix device2object;
       device2object.SetReverse(m_pCurrentLayer->m_Matrix);
       device2object.TransformRect(m_ClipRect);
     }
     CPDF_PageObjectList::iterator iter;
@@ skipping 42 matching lines @@
       if (pPause && pPause->NeedToPauseNow()) {
         return;
       }
     } else {
       m_pCurrentLayer->m_pObjectHolder->ContinueParse(pPause);
       if (!m_pCurrentLayer->m_pObjectHolder->IsParsed())
         return;
     }
   }
 }