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

core/fpdfapi/page/cpdf_form.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/page/cpdf_form.h"
 
 #include "core/fpdfapi/page/cpdf_contentparser.h"
 #include "core/fpdfapi/page/cpdf_pageobject.h"
 #include "core/fpdfapi/page/cpdf_pageobjectholder.h"
 #include "core/fpdfapi/page/pageint.h"
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
 #include "core/fpdfapi/parser/cpdf_stream.h"
+#include "third_party/base/ptr_util.h"
 
 CPDF_Form::CPDF_Form(CPDF_Document* pDoc,
                      CPDF_Dictionary* pPageResources,
                      CPDF_Stream* pFormStream,
                      CPDF_Dictionary* pParentResources) {
   m_pDocument = pDoc;
   m_pFormStream = pFormStream;
   m_pFormDict = pFormStream ? pFormStream->GetDict() : nullptr;
   m_pResources = m_pFormDict->GetDictFor("Resources");
   m_pPageResources = pPageResources;
   if (!m_pResources)
     m_pResources = pParentResources;
   if (!m_pResources)
     m_pResources = pPageResources;
   m_Transparency = 0;
   LoadTransInfo();
 }
 
 CPDF_Form::~CPDF_Form() {}
 
 void CPDF_Form::StartParse(CPDF_AllStates* pGraphicStates,
                            const CFX_Matrix* pParentMatrix,
                            CPDF_Type3Char* pType3Char,
                            int level) {
   if (m_ParseState == CONTENT_PARSED || m_ParseState == CONTENT_PARSING)
     return;
 
-  m_pParser.reset(new CPDF_ContentParser);
+  m_pParser = pdfium::MakeUnique<CPDF_ContentParser>();
   m_pParser->Start(this, pGraphicStates, pParentMatrix, pType3Char, level);
   m_ParseState = CONTENT_PARSING;
 }
 
 void CPDF_Form::ParseContent(CPDF_AllStates* pGraphicStates,
                              const CFX_Matrix* pParentMatrix,
                              CPDF_Type3Char* pType3Char,
                              int level) {
   StartParse(pGraphicStates, pParentMatrix, pType3Char, level);
   ContinueParse(nullptr);
 }