Remove IFWL_*::Create methods, use new

xfa/fwl/lightwidget/cfwl_datetimepicker.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/lightwidget/cfwl_datetimepicker.h"
 
 #include <memory>
 
+#include "third_party/base/ptr_util.h"
 #include "xfa/fwl/core/fwl_error.h"
 #include "xfa/fwl/core/ifwl_datetimepicker.h"
 #include "xfa/fwl/core/ifwl_widget.h"
 
 IFWL_DateTimePicker* CFWL_DateTimePicker::GetWidget() {
   return static_cast<IFWL_DateTimePicker*>(m_pIface.get());
 }
 
 const IFWL_DateTimePicker* CFWL_DateTimePicker::GetWidget() const {
   return static_cast<IFWL_DateTimePicker*>(m_pIface.get());
 }
 
 FWL_Error CFWL_DateTimePicker::Initialize(
     const CFWL_WidgetProperties* pProperties) {
   if (m_pIface)
     return FWL_Error::Indefinite;
   if (pProperties) {
     *m_pProperties = *pProperties;
   }
-  std::unique_ptr<IFWL_DateTimePicker> pDateTimePicker(
-      IFWL_DateTimePicker::Create(
-          m_pProperties->MakeWidgetImpProperties(&m_DateTimePickerDP),
-          nullptr));
+  std::unique_ptr<IFWL_DateTimePicker> pDateTimePicker =
+      pdfium::MakeUnique<IFWL_DateTimePicker>(
+          m_pProperties->MakeWidgetImpProperties(&m_DateTimePickerDP));
   FWL_Error ret = pDateTimePicker->Initialize();
   if (ret != FWL_Error::Succeeded) {
     return ret;
   }
   m_pIface = std::move(pDateTimePicker);
   CFWL_Widget::Initialize();
   return FWL_Error::Succeeded;
 }
 
 FWL_Error CFWL_DateTimePicker::SetToday(int32_t iYear,
@@ skipping 118 matching lines @@
 }
 
 FWL_Error CFWL_DateTimePicker::SetEditLimit(int32_t nLimit) {
   return GetWidget()->SetEditLimit(nLimit);
 }
 
 FWL_Error CFWL_DateTimePicker::ModifyEditStylesEx(uint32_t dwStylesExAdded,
                                                   uint32_t dwStylesExRemoved) {
   return GetWidget()->ModifyEditStylesEx(dwStylesExAdded, dwStylesExRemoved);
 }