Remove DataProvider from CFWL_WidgetProperties

xfa/fwl/core/ifwl_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/core/ifwl_datetimepicker.h"
 
 #include <memory>
 #include <utility>
@@ skipping 23 matching lines @@
     : IFWL_Widget(app, std::move(properties), nullptr),
       m_iBtnState(1),
       m_iYear(-1),
       m_iMonth(-1),
       m_iDay(-1),
       m_bLBtnDown(false) {
   m_rtBtn.Set(0, 0, 0, 0);
 
   m_pProperties->m_dwStyleExes = FWL_STYLEEXT_DTP_ShortDateFormat;
 
-  auto monthProp = pdfium::MakeUnique<CFWL_WidgetProperties>(this);
+  auto monthProp = pdfium::MakeUnique<CFWL_WidgetProperties>();
   monthProp->m_dwStyles = FWL_WGTSTYLE_Popup | FWL_WGTSTYLE_Border;
   monthProp->m_dwStates = FWL_WGTSTATE_Invisible;
   monthProp->m_pParent = this;
   monthProp->m_pThemeProvider = m_pProperties->m_pThemeProvider;
   m_pMonthCal.reset(
       new IFWL_MonthCalendar(m_pOwnerApp, std::move(monthProp), this));
 
   CFX_RectF rtMonthCal;
   m_pMonthCal->GetWidgetRect(rtMonthCal, true);
   rtMonthCal.Set(0, 0, rtMonthCal.width, rtMonthCal.height);
@@ skipping 597 matching lines @@
     if (DisForm_IsMonthCalendarVisible())
       ShowMonthCalendar(false);
     if (m_pEdit->GetStates() & FWL_WGTSTATE_Focused) {
       pMsg->m_pSrcTarget = m_pEdit.get();
       m_pEdit->GetDelegate()->OnProcessMessage(pMsg);
     }
   }
   rtInvalidate.Inflate(2, 2);
   Repaint(&rtInvalidate);
 }