Cleanup: Mark methods with the override keyword.

fpdfsdk/include/formfiller/FFL_IFormFiller.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_FORMFILLER_FFL_IFORMFILLER_H_
 #define FPDFSDK_INCLUDE_FORMFILLER_FFL_IFORMFILLER_H_
 
 #include <map>
 
 #include "FormFiller.h"
 
 class CFFL_FormFiller;
 class CFFL_PrivateData;
 
 class CFFL_IFormFiller : public IPWL_Filler_Notify {
  public:
-  CFFL_IFormFiller(CPDFDoc_Environment* pApp);
-  virtual ~CFFL_IFormFiller();
+  explicit CFFL_IFormFiller(CPDFDoc_Environment* pApp);
+  ~CFFL_IFormFiller() override;
 
   virtual FX_BOOL Annot_HitTest(CPDFSDK_PageView* pPageView,
                                 CPDFSDK_Annot* pAnnot,
                                 CPDF_Point point);
   virtual FX_RECT GetViewBBox(CPDFSDK_PageView* pPageView,
                               CPDFSDK_Annot* pAnnot);
   virtual void OnDraw(CPDFSDK_PageView* pPageView,
-                      /*HDC hDC,*/ CPDFSDK_Annot* pAnnot,
+                      CPDFSDK_Annot* pAnnot,
                       CFX_RenderDevice* pDevice,
                       CPDF_Matrix* pUser2Device,
-                      /*const CRect& rcWindow,*/ FX_DWORD dwFlags);
+                      FX_DWORD dwFlags);
 
   virtual void OnCreate(CPDFSDK_Annot* pAnnot);
   virtual void OnLoad(CPDFSDK_Annot* pAnnot);
   virtual void OnDelete(CPDFSDK_Annot* pAnnot);
 
   virtual void OnMouseEnter(CPDFSDK_PageView* pPageView,
                             CPDFSDK_Annot* pAnnot,
                             FX_UINT nFlag);
   virtual void OnMouseExit(CPDFSDK_PageView* pPageView,
                            CPDFSDK_Annot* pAnnot,
@@ skipping 30 matching lines @@
                               const CPDF_Point& point);
 
   virtual FX_BOOL OnKeyDown(CPDFSDK_Annot* pAnnot,
                             FX_UINT nKeyCode,
                             FX_UINT nFlags);
   virtual FX_BOOL OnChar(CPDFSDK_Annot* pAnnot, FX_UINT nChar, FX_UINT nFlags);
 
   virtual FX_BOOL OnSetFocus(CPDFSDK_Annot* pAnnot, FX_UINT nFlag);
   virtual FX_BOOL OnKillFocus(CPDFSDK_Annot* pAnnot, FX_UINT nFlag);
 
-  virtual void QueryWherePopup(void* pPrivateData,
-                               FX_FLOAT fPopupMin,
-                               FX_FLOAT fPopupMax,
-                               int32_t& nRet,
-                               FX_FLOAT& fPopupRet);
-  virtual void OnBeforeKeyStroke(FX_BOOL bEditOrList,
-                                 void* pPrivateData,
-                                 int32_t nKeyCode,
-                                 CFX_WideString& strChange,
-                                 const CFX_WideString& strChangeEx,
-                                 int nSelStart,
-                                 int nSelEnd,
-                                 FX_BOOL bKeyDown,
-                                 FX_BOOL& bRC,
-                                 FX_BOOL& bExit,
-                                 FX_DWORD nFlag);
-  virtual void OnAfterKeyStroke(FX_BOOL bEditOrList,
-                                void* pPrivateData,
-                                FX_BOOL& bExit,
-                                FX_DWORD nFlag);
-
   CFFL_FormFiller* GetFormFiller(CPDFSDK_Annot* pAnnot, FX_BOOL bRegister);
   void RemoveFormFiller(CPDFSDK_Annot* pAnnot);
 
   static FX_BOOL IsVisible(CPDFSDK_Widget* pWidget);
   static FX_BOOL IsReadOnly(CPDFSDK_Widget* pWidget);
   static FX_BOOL IsFillingAllowed(CPDFSDK_Widget* pWidget);
   static FX_BOOL IsValidAnnot(CPDFSDK_PageView* pPageView,
                               CPDFSDK_Annot* pAnnot);
 
   void OnKeyStrokeCommit(CPDFSDK_Widget* pWidget,
@@ skipping 17 matching lines @@
                 FX_DWORD nFlag);
   void OnButtonUp(CPDFSDK_Widget* pWidget,
                   CPDFSDK_PageView* pPageView,
                   FX_BOOL& bReset,
                   FX_BOOL& bExit,
                   FX_UINT nFlag);
 
  private:
   using CFFL_Widget2Filler = std::map<CPDFSDK_Annot*, CFFL_FormFiller*>;
 
+  // IPWL_Filler_Notify:
+  void QueryWherePopup(void* pPrivateData,
+                       FX_FLOAT fPopupMin,
+                       FX_FLOAT fPopupMax,
+                       int32_t& nRet,
+                       FX_FLOAT& fPopupRet) override;
+  void OnBeforeKeyStroke(FX_BOOL bEditOrList,
+                         void* pPrivateData,
+                         int32_t nKeyCode,
+                         CFX_WideString& strChange,
+                         const CFX_WideString& strChangeEx,
+                         int nSelStart,
+                         int nSelEnd,
+                         FX_BOOL bKeyDown,
+                         FX_BOOL& bRC,
+                         FX_BOOL& bExit,
+                         FX_DWORD nFlag) override;
+  void OnAfterKeyStroke(FX_BOOL bEditOrList,
+                        void* pPrivateData,
+                        FX_BOOL& bExit,
+                        FX_DWORD nFlag) override;
+
   void UnRegisterFormFiller(CPDFSDK_Annot* pAnnot);
 
   CPDFDoc_Environment* m_pApp;
   CFFL_Widget2Filler m_Maps;
   FX_BOOL m_bNotifying;
 };
 
 class CFFL_PrivateData {
  public:
   CPDFSDK_Widget* pWidget;
   CPDFSDK_PageView* pPageView;
   int nWidgetAge;
   int nValueAge;
 };
 
 #endif  // FPDFSDK_INCLUDE_FORMFILLER_FFL_IFORMFILLER_H_