Merge to XFA: Use override in more classes in fpdfsdk/

fpdfsdk/include/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_INCLUDE_PDFWINDOW_PWL_LISTCTRL_H_
 #define FPDFSDK_INCLUDE_PDFWINDOW_PWL_LISTCTRL_H_
 
 #include "PWL_Wnd.h"
 
 class CPWL_ListCtrl : public CPWL_Wnd {
  public:
   CPWL_ListCtrl();
-  virtual ~CPWL_ListCtrl();
+  ~CPWL_ListCtrl() override;
 
   void SetScrollPos(const CPDF_Point& point);
   CPDF_Point GetScrollPos() const;
   CPDF_Rect 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);
   CPDF_Point InToOut(const CPDF_Point& point) const;
   CPDF_Point OutToIn(const CPDF_Point& point) const;
   CPDF_Rect InToOut(const CPDF_Rect& rect) const;
   CPDF_Rect OutToIn(const CPDF_Rect& rect) const;
 
  protected:
-  virtual void RePosChildWnd();
-  virtual void DrawChildAppearance(CFX_RenderDevice* pDevice,
-                                   CPDF_Matrix* pUser2Device);
+  // CPWL_Wnd
+  void RePosChildWnd() override;
+  void DrawChildAppearance(CFX_RenderDevice* pDevice,
+                           CPDF_Matrix* pUser2Device) override;
 
  private:
   void ResetAll(FX_BOOL bMove, int32_t nStart);
 
   CPDF_Rect m_rcContent;
   CPDF_Point m_ptScroll;
   FX_FLOAT m_fItemSpace;
   FX_FLOAT m_fTopSpace;
   FX_FLOAT m_fBottomSpace;
 };
 
 #endif  // FPDFSDK_INCLUDE_PDFWINDOW_PWL_LISTCTRL_H_