Remove unused code.

fpdfsdk/pdfwindow/PWL_ListCtrl.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_PDFWINDOW_PWL_LISTCTRL_H_
-#define FPDFSDK_PDFWINDOW_PWL_LISTCTRL_H_
-
-#include "fpdfsdk/pdfwindow/PWL_Wnd.h"
-
-class CPWL_ListCtrl : public CPWL_Wnd {
- public:
-  CPWL_ListCtrl();
-  ~CPWL_ListCtrl() override;
-
-  void SetScrollPos(const CFX_FloatPoint& point);
-  CFX_FloatPoint GetScrollPos() const;
-  CFX_FloatRect GetScrollArea() const;
-  void SetItemSpace(FX_FLOAT fSpace);
-  void SetTopSpace(FX_FLOAT fSpace);
-  void SetBottomSpace(FX_FLOAT fSpace);
-  void ResetFace();
-  void ResetContent(int32_t nStart);
-  int32_t GetItemIndex(CPWL_Wnd* pItem);
-  FX_FLOAT GetContentsHeight(FX_FLOAT fLimitWidth);
-  CFX_FloatPoint InToOut(const CFX_FloatPoint& point) const;
-  CFX_FloatPoint OutToIn(const CFX_FloatPoint& point) const;
-  CFX_FloatRect InToOut(const CFX_FloatRect& rect) const;
-  CFX_FloatRect OutToIn(const CFX_FloatRect& rect) const;
-
- protected:
-  // CPWL_Wnd
-  void RePosChildWnd() override;
-  void DrawChildAppearance(CFX_RenderDevice* pDevice,
-                           CFX_Matrix* pUser2Device) override;
-
- private:
-  void ResetAll(FX_BOOL bMove, int32_t nStart);
-
-  CFX_FloatRect m_rcContent;
-  CFX_FloatPoint m_ptScroll;
-  FX_FLOAT m_fItemSpace;
-  FX_FLOAT m_fTopSpace;
-  FX_FLOAT m_fBottomSpace;
-};
-
-#endif  // FPDFSDK_PDFWINDOW_PWL_LISTCTRL_H_