Cleanup unused methods and return values in FWL code.

xfa/fwl/core/ifwl_datetimepicker.h

 // 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
 
 #ifndef XFA_FWL_CORE_IFWL_DATETIMEPICKER_H_
 #define XFA_FWL_CORE_IFWL_DATETIMEPICKER_H_
 
 #include "xfa/fwl/core/cfwl_event.h"
 #include "xfa/fwl/core/cfwl_widgetimpproperties.h"
 #include "xfa/fwl/core/ifwl_dataprovider.h"
 #include "xfa/fwl/core/ifwl_monthcalendar.h"
 #include "xfa/fwl/core/ifwl_widget.h"
 
-#define FWL_CLASS_DateTimePicker L"FWL_DATETIMEPICKER"
 #define FWL_STYLEEXT_DTP_AllowEdit (1L << 0)
 #define FWL_STYLEEXT_DTP_LongDateFormat (0L << 1)
 #define FWL_STYLEEXT_DTP_ShortDateFormat (1L << 1)
 #define FWL_STYLEEXT_DTP_TimeFormat (2L << 1)
 #define FWL_STYLEEXT_DTP_Spin (1L << 3)
 #define FWL_STYLEEXT_DTP_EditHNear (0L << 4)
 #define FWL_STYLEEXT_DTP_EditHCenter (1L << 4)
 #define FWL_STYLEEXT_DTP_EditHFar (2L << 4)
 #define FWL_STYLEEXT_DTP_EditVNear (0L << 6)
 #define FWL_STYLEEXT_DTP_EditVCenter (1L << 6)
@@ skipping 33 matching lines @@
                              int32_t& iMonth,
                              int32_t& iDay) = 0;
 };
 
 class IFWL_DateTimePicker : public IFWL_Widget {
  public:
   explicit IFWL_DateTimePicker(const CFWL_WidgetImpProperties& properties);
   ~IFWL_DateTimePicker() override;
 
   // IFWL_Widget
-  FWL_Error GetClassName(CFX_WideString& wsClass) const override;
   FWL_Type GetClassID() const override;
   FWL_Error Initialize() override;
-  FWL_Error Finalize() override;
+  void Finalize() override;
   FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE) override;
   FWL_Error Update() override;
   FWL_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy) override;
   FWL_Error DrawWidget(CFX_Graphics* pGraphics,
                        const CFX_Matrix* pMatrix = nullptr) override;
   FWL_Error SetThemeProvider(IFWL_ThemeProvider* pTP) override;
 
   FWL_Error GetCurSel(int32_t& iYear, int32_t& iMonth, int32_t& iDay);
   FWL_Error SetCurSel(int32_t iYear, int32_t iMonth, int32_t iDay);
   FWL_Error SetEditText(const CFX_WideString& wsText);
@@ skipping 103 matching lines @@
   void OnMouseMove(CFWL_MsgMouse* pMsg);
   void OnMouseLeave(CFWL_MsgMouse* pMsg);
 
   IFWL_DateTimePicker* m_pOwner;
 
  private:
   void DisForm_OnFocusChanged(CFWL_Message* pMsg, FX_BOOL bSet = TRUE);
 };
 
 #endif  // XFA_FWL_CORE_IFWL_DATETIMEPICKER_H_