Cleanup unused methods and return values in FWL code.

xfa/fwl/core/ifwl_caret.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_CARET_H_
 #define XFA_FWL_CORE_IFWL_CARET_H_
 
 #include <memory>
 
 #include "xfa/fwl/core/ifwl_timer.h"
 #include "xfa/fwl/core/ifwl_widget.h"
 #include "xfa/fxgraphics/cfx_color.h"
 
 class CFWL_WidgetImpProperties;
 class IFWL_Widget;
 class CFWL_CaretImpDelegate;
 
-#define FWL_CLASS_Caret L"FWL_CARET"
 #define FWL_STATE_CAT_HightLight 1
 
 class IFWL_Caret : public IFWL_Widget {
  public:
   IFWL_Caret(const CFWL_WidgetImpProperties& properties, IFWL_Widget* pOuter);
   ~IFWL_Caret() 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 DrawWidget(CFX_Graphics* pGraphics,
                        const CFX_Matrix* pMatrix = nullptr) override;
 
   void ShowCaret(FX_BOOL bFlag = TRUE);
   FWL_Error GetFrequency(uint32_t& elapse);
   FWL_Error SetFrequency(uint32_t elapse);
   FWL_Error SetColor(CFX_Color crFill);
 
  protected:
   friend class CFWL_CaretImpDelegate;
@@ skipping 23 matching lines @@
   CFWL_CaretImpDelegate(IFWL_Caret* pOwner);
   void OnProcessMessage(CFWL_Message* pMessage) override;
   void OnDrawWidget(CFX_Graphics* pGraphics,
                     const CFX_Matrix* pMatrix = nullptr) override;
 
  protected:
   IFWL_Caret* m_pOwner;
 };
 
 #endif  // XFA_FWL_CORE_IFWL_CARET_H_