Fold IFWL*::{Initialize|Finalize} into constructor/destructor

xfa/fwl/core/cfwl_listbox.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 "xfa/fwl/core/cfwl_listbox.h"
 
 #include <memory>
 
+#include "third_party/base/ptr_util.h"
 #include "third_party/base/stl_util.h"
 
 namespace {
 
 IFWL_ListBox* ToListBox(IFWL_Widget* widget) {
   return static_cast<IFWL_ListBox*>(widget);
 }
 
 }  // namespace
 
 CFWL_ListBox::CFWL_ListBox(const IFWL_App* app) : CFWL_Widget(app) {}
 
 CFWL_ListBox::~CFWL_ListBox() {}
 
 void CFWL_ListBox::Initialize() {
   ASSERT(!m_pIface);
 
-  std::unique_ptr<IFWL_ListBox> pListBox(new IFWL_ListBox(
-      m_pApp, m_pProperties->MakeWidgetImpProperties(&m_ListBoxDP), nullptr));
-  pListBox->Initialize();
+  m_pIface = pdfium::MakeUnique<IFWL_ListBox>(
+      m_pApp, m_pProperties->MakeWidgetImpProperties(&m_ListBoxDP), nullptr);
 
-  m_pIface = std::move(pListBox);
   CFWL_Widget::Initialize();
 }
 
 FWL_Error CFWL_ListBox::AddDIBitmap(CFX_DIBitmap* pDIB, IFWL_ListItem* pItem) {
   static_cast<CFWL_ListItem*>(pItem)->m_pDIB = pDIB;
   return FWL_Error::Succeeded;
 }
 
 IFWL_ListItem* CFWL_ListBox::AddString(const CFX_WideStringC& wsAdd,
                                        FX_BOOL bSelect) {
@@ skipping 297 matching lines @@
   m_rtItem.Reset();
   m_dwStates = 0;
   m_wsText = L"";
   m_pDIB = nullptr;
   m_pData = nullptr;
   m_dwCheckState = 0;
   m_rtCheckBox.Reset();
 }
 
 CFWL_ListItem::~CFWL_ListItem() {}