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

xfa/fwl/core/ifwl_monthcalendar.cpp

Index: xfa/fwl/core/ifwl_monthcalendar.cpp
diff --git a/xfa/fwl/core/ifwl_monthcalendar.cpp b/xfa/fwl/core/ifwl_monthcalendar.cpp
index 43e90a23a593e3c9b7835b20f4b4015dec18a1ac..8c5b3505b45cbf2055b87542e82586eb045e39cd 100644
--- a/xfa/fwl/core/ifwl_monthcalendar.cpp
+++ b/xfa/fwl/core/ifwl_monthcalendar.cpp
@@ -8,6 +8,7 @@
 
 #include <algorithm>
 
+#include "third_party/base/ptr_util.h"
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fwl/core/cfwl_message.h"
 #include "xfa/fwl/core/cfwl_themebackground.h"
@@ -145,6 +146,8 @@ IFWL_MonthCalendar::IFWL_MonthCalendar(
   m_rtClient.Reset();
   m_rtWeekNum.Reset();
   m_rtWeekNumSep.Reset();
+
+  SetDelegate(pdfium::MakeUnique<CFWL_MonthCalendarImpDelegate>(this));
 }
 
 IFWL_MonthCalendar::~IFWL_MonthCalendar() {
@@ -152,17 +155,6 @@ IFWL_MonthCalendar::~IFWL_MonthCalendar() {
   m_arrSelDays.RemoveAll();
 }
 
-void IFWL_MonthCalendar::Initialize() {
-  IFWL_Widget::Initialize();
-  m_pDelegate = new CFWL_MonthCalendarImpDelegate(this);
-}
-
-void IFWL_MonthCalendar::Finalize() {
-  delete m_pDelegate;
-  m_pDelegate = nullptr;
-  IFWL_Widget::Finalize();
-}
-
 FWL_Type IFWL_MonthCalendar::GetClassID() const {
   return FWL_Type::MonthCalendar;
 }