Use smart pointers for class owned pointers

xfa/fwl/basewidget/fwl_monthcalendarimp.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/basewidget/fwl_monthcalendarimp.h"
 
 #include <algorithm>
 
@@ skipping 133 matching lines @@
                                       int32_t iMonth,
                                       int32_t iDay) {
   return static_cast<CFWL_MonthCalendarImp*>(GetImpl())
       ->SetSelect(iYear, iMonth, iDay);
 }
 
 CFWL_MonthCalendarImp::CFWL_MonthCalendarImp(
     const CFWL_WidgetImpProperties& properties,
     IFWL_Widget* pOuter)
     : CFWL_WidgetImp(properties, pOuter),
+      m_bInit(FALSE),
+      m_pDateTime(new CFX_DateTime),
       m_iCurYear(2011),
       m_iCurMonth(1),
       m_iYear(2011),
       m_iMonth(1),
       m_iDay(1),
       m_iHovered(-1),
       m_iLBtnPartStates(CFWL_PartState_Normal),
-      m_iRBtnPartStates(CFWL_PartState_Normal) {
+      m_iRBtnPartStates(CFWL_PartState_Normal),
+      m_iMaxSel(1) {
   m_rtHead.Reset();
   m_rtWeek.Reset();
   m_rtLBtn.Reset();
   m_rtRBtn.Reset();
   m_rtDates.Reset();
   m_rtHSep.Reset();
   m_rtHeadText.Reset();
   m_rtToday.Reset();
   m_rtTodayFlag.Reset();
   m_rtClient.Reset();
   m_rtWeekNum.Reset();
   m_rtWeekNumSep.Reset();
-  m_pDateTime = new CFX_DateTime;
-  m_bInit = FALSE;
-  m_iMaxSel = 1;
 }
 
 CFWL_MonthCalendarImp::~CFWL_MonthCalendarImp() {
   ClearDateItem();
-  delete m_pDateTime;
   m_arrSelDays.RemoveAll();
 }
 
 FWL_Error CFWL_MonthCalendarImp::GetClassName(CFX_WideString& wsClass) const {
   wsClass = FWL_CLASS_MonthCalendar;
   return FWL_Error::Succeeded;
 }
 
 FWL_Type CFWL_MonthCalendarImp::GetClassID() const {
   return FWL_Type::MonthCalendar;
@@ skipping 1011 matching lines @@
                            uint32_t dwSt,
                            CFX_RectF rc,
                            CFX_WideString& wsday)
     : iDay(day),
       iDayOfWeek(dayofweek),
       dwStates(dwSt),
       rect(rc),
       wsDay(wsday) {}
 
 FWL_DATEINFO::~FWL_DATEINFO() {}