Cleanup unused methods and return values in FWL code.

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 "xfa/fwl/core/cfwl_message.h"
 #include "xfa/fwl/core/cfwl_themebackground.h"
@@ skipping 18 matching lines @@
       m_iBtnState(1),
       m_iYear(-1),
       m_iMonth(-1),
       m_iDay(-1),
       m_bLBtnDown(FALSE) {
   m_rtBtn.Set(0, 0, 0, 0);
 }
 
 IFWL_DateTimePicker::~IFWL_DateTimePicker() {}
 
-FWL_Error IFWL_DateTimePicker::GetClassName(CFX_WideString& wsClass) const {
-  wsClass = FWL_CLASS_DateTimePicker;
-  return FWL_Error::Succeeded;
-}
-
 FWL_Type IFWL_DateTimePicker::GetClassID() const {
   return FWL_Type::DateTimePicker;
 }
 
 FWL_Error IFWL_DateTimePicker::Initialize() {
   if (IFWL_Widget::Initialize() != FWL_Error::Succeeded)
     return FWL_Error::Indefinite;
 
   m_pDelegate = new CFWL_DateTimePickerImpDelegate(this);
   m_pProperties->m_dwStyleExes = FWL_STYLEEXT_DTP_ShortDateFormat;
@@ skipping 14 matching lines @@
   propEdit.m_pParent = this;
   propEdit.m_pThemeProvider = m_pProperties->m_pThemeProvider;
 
   m_pEdit.reset(new IFWL_DateTimeEdit(propEdit, this));
   m_pEdit->Initialize();
   RegisterEventTarget(m_pMonthCal.get());
   RegisterEventTarget(m_pEdit.get());
   return FWL_Error::Succeeded;
 }
 
-FWL_Error IFWL_DateTimePicker::Finalize() {
-  if (m_pEdit) {
+void IFWL_DateTimePicker::Finalize() {
+  if (m_pEdit)
     m_pEdit->Finalize();
-  }
-  if (m_pMonthCal) {
+  if (m_pMonthCal)
     m_pMonthCal->Finalize();
-  }
-  if (m_pForm) {
+  if (m_pForm)
     m_pForm->Finalize();
-  }
+
   UnregisterEventTarget();
   delete m_pDelegate;
   m_pDelegate = nullptr;
-  return IFWL_Widget::Finalize();
+  IFWL_Widget::Finalize();
 }
 
 FWL_Error IFWL_DateTimePicker::GetWidgetRect(CFX_RectF& rect,
                                              FX_BOOL bAutoSize) {
   if (m_pWidgetMgr->IsFormDisabled()) {
     return DisForm_GetWidgetRect(rect, bAutoSize);
   }
   if (bAutoSize) {
     rect.Set(0, 0, kDateTimePickerWidth, kDateTimePickerHeight);
     IFWL_Widget::GetWidgetRect(rect, TRUE);
@@ skipping 759 matching lines @@
 
 int32_t IFWL_DateTimePicker::CFWL_MonthCalendarImpDP::GetCurMonth(
     IFWL_Widget* pWidget) {
   return m_iCurMonth;
 }
 
 int32_t IFWL_DateTimePicker::CFWL_MonthCalendarImpDP::GetCurYear(
     IFWL_Widget* pWidget) {
   return m_iCurYear;
 }