Cleanup some PWL interfaces.

fpdfsdk/formfiller/cffl_combobox.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 FPDFSDK_FORMFILLER_CFFL_COMBOBOX_H_
 #define FPDFSDK_FORMFILLER_CFFL_COMBOBOX_H_
 
 #include "core/fxcrt/include/fx_string.h"
 #include "fpdfsdk/formfiller/cffl_formfiller.h"
 
 class CBA_FontMap;
 
 struct FFL_ComboBoxState {
   int nIndex;
   int nStart;
   int nEnd;
   CFX_WideString sValue;
 };
 
-class CFFL_ComboBox : public CFFL_FormFiller,
-                      public IPWL_FocusHandler,
-                      public IPWL_Edit_Notify {
+class CFFL_ComboBox : public CFFL_FormFiller, public IPWL_FocusHandler {
  public:
   CFFL_ComboBox(CPDFDoc_Environment* pApp, CPDFSDK_Annot* pWidget);
   ~CFFL_ComboBox() override;
 
   // CFFL_FormFiller:
   PWL_CREATEPARAM GetCreateParam() override;
   CPWL_Wnd* NewPDFWindow(const PWL_CREATEPARAM& cp,
                          CPDFSDK_PageView* pPageView) override;
   FX_BOOL OnChar(CPDFSDK_Annot* pAnnot, FX_UINT nChar, FX_UINT nFlags) override;
   FX_BOOL IsDataChanged(CPDFSDK_PageView* pPageView) override;
   void SaveData(CPDFSDK_PageView* pPageView) override;
   void GetActionData(CPDFSDK_PageView* pPageView,
                      CPDF_AAction::AActionType type,
                      PDFSDK_FieldAction& fa) override;
   void SetActionData(CPDFSDK_PageView* pPageView,
                      CPDF_AAction::AActionType type,
                      const PDFSDK_FieldAction& fa) override;
   FX_BOOL IsActionDataChanged(CPDF_AAction::AActionType type,
                               const PDFSDK_FieldAction& faOld,
                               const PDFSDK_FieldAction& faNew) override;
   void SaveState(CPDFSDK_PageView* pPageView) override;
   void RestoreState(CPDFSDK_PageView* pPageView) override;
   CPWL_Wnd* ResetPDFWindow(CPDFSDK_PageView* pPageView,
                            FX_BOOL bRestoreValue) override;
 
   // IPWL_FocusHandler:
   void OnSetFocus(CPWL_Wnd* pWnd) override;
-  void OnKillFocus(CPWL_Wnd* pWnd) override;
-
-  // IPWL_Edit_Notify:
-  void OnAddUndo(CPWL_Edit* pEdit) override;
 
 #ifdef PDF_ENABLE_XFA
   // CFFL_FormFiller:
   FX_BOOL IsFieldFull(CPDFSDK_PageView* pPageView) override;
 #endif  // PDF_ENABLE_XFA
 
  private:
   CFX_WideString GetSelectExportText();
 
   CBA_FontMap* m_pFontMap;
   FFL_ComboBoxState m_State;
 };
 
 #endif  // FPDFSDK_FORMFILLER_CFFL_COMBOBOX_H_