Cleanup unused methods and return values in FWL code.

xfa/fwl/core/ifwl_pushbutton.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_PUSHBUTTON_H_
 #define XFA_FWL_CORE_IFWL_PUSHBUTTON_H_
 
 #include "xfa/fwl/core/cfwl_widgetimpproperties.h"
 #include "xfa/fwl/core/ifwl_dataprovider.h"
 #include "xfa/fwl/core/ifwl_widget.h"
 
-#define FWL_CLASS_PushButton L"FWL_PUSHBUTTON"
 #define FWL_STYLEEXT_PSB_Left (0L << 0)
 #define FWL_STYLEEXT_PSB_Center (1L << 0)
 #define FWL_STYLEEXT_PSB_Right (2L << 0)
 #define FWL_STYLEEXT_PSB_Top (0L << 2)
 #define FWL_STYLEEXT_PSB_VCenter (1L << 2)
 #define FWL_STYLEEXT_PSB_Bottom (2L << 2)
 #define FWL_STYLEEXT_PSB_TextOnly (0L << 4)
 #define FWL_STYLEEXT_PSB_IconOnly (1L << 4)
 #define FWL_STYLEEXT_PSB_TextIcon (2L << 4)
 #define FWL_STYLEEXT_PSB_HLayoutMask (3L << 0)
@@ skipping 13 matching lines @@
  public:
   virtual CFX_DIBitmap* GetPicture(IFWL_Widget* pWidget) = 0;
 };
 
 class IFWL_PushButton : public IFWL_Widget {
  public:
   IFWL_PushButton(const CFWL_WidgetImpProperties& properties);
   ~IFWL_PushButton() 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;
   void SetStates(uint32_t dwStates, FX_BOOL bSet = TRUE) override;
   FWL_Error Update() override;
   FWL_Error DrawWidget(CFX_Graphics* pGraphics,
                        const CFX_Matrix* pMatrix = nullptr) override;
 
  protected:
   friend class CFWL_PushButtonImpDelegate;
 
   void DrawBkground(CFX_Graphics* pGraphics,
@@ skipping 24 matching lines @@
   void OnFocusChanged(CFWL_Message* pMsg, FX_BOOL bSet = TRUE);
   void OnLButtonDown(CFWL_MsgMouse* pMsg);
   void OnLButtonUp(CFWL_MsgMouse* pMsg);
   void OnMouseMove(CFWL_MsgMouse* pMsg);
   void OnMouseLeave(CFWL_MsgMouse* pMsg);
   void OnKeyDown(CFWL_MsgKey* pMsg);
   IFWL_PushButton* m_pOwner;
 };
 
 #endif  // XFA_FWL_CORE_IFWL_PUSHBUTTON_H_