Cleanup unused methods and return values in FWL code.

xfa/fwl/core/ifwl_picturebox.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_PICTUREBOX_H_
 #define XFA_FWL_CORE_IFWL_PICTUREBOX_H_
 
 #include "xfa/fwl/core/cfwl_widgetimpproperties.h"
 #include "xfa/fwl/core/fwl_error.h"
 #include "xfa/fwl/core/ifwl_dataprovider.h"
 #include "xfa/fwl/core/ifwl_widget.h"
 
-#define FWL_CLASS_PictureBox L"FWL_PICTUREBOX"
 #define FWL_STYLEEXT_PTB_Left 0L << 0
 #define FWL_STYLEEXT_PTB_Center 1L << 0
 #define FWL_STYLEEXT_PTB_Right 2L << 0
 #define FWL_STYLEEXT_PTB_Top 0L << 2
 #define FWL_STYLEEXT_PTB_Vcenter 1L << 2
 #define FWL_STYLEEXT_PTB_Bottom 2L << 2
 #define FWL_STYLEEXT_PTB_Normal 0L << 4
 #define FWL_STYLEEXT_PTB_AutoSize 1L << 4
 #define FWL_STYLEEXT_PTB_StretchImage 2L << 4
 #define FWL_STYLEEXT_PTB_StretchHImage 3L << 4
@@ skipping 16 matching lines @@
   virtual int32_t GetFlipMode(IFWL_Widget* pWidget) = 0;
   virtual FWL_Error GetMatrix(IFWL_Widget* pWidget, CFX_Matrix& matrix) = 0;
 };
 
 class IFWL_PictureBox : public IFWL_Widget {
  public:
   explicit IFWL_PictureBox(const CFWL_WidgetImpProperties& properties);
   ~IFWL_PictureBox() 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_Error DrawWidget(CFX_Graphics* pGraphics,
                        const CFX_Matrix* pMatrix = nullptr) override;
 
  protected:
   friend class CFWL_PictureBoxImpDelegate;
 
   void DrawBkground(CFX_Graphics* pGraphics,
                     IFWL_ThemeProvider* pTheme,
@@ skipping 12 matching lines @@
  public:
   CFWL_PictureBoxImpDelegate(IFWL_PictureBox* pOwner);
   void OnDrawWidget(CFX_Graphics* pGraphics,
                     const CFX_Matrix* pMatrix = nullptr) override;
 
  protected:
   IFWL_PictureBox* m_pOwner;
 };
 
 #endif  // XFA_FWL_CORE_IFWL_PICTUREBOX_H_