Use override in more classes in fpdfsdk/

fpdfsdk/include/formfiller/FFL_CBA_Fontmap.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_CBA_FONTMAP_H_
 #define FPDFSDK_INCLUDE_FORMFILLER_FFL_CBA_FONTMAP_H_
 
 #include "../pdfwindow/PWL_FontMap.h"
 
 class CPDF_Dictionary;
 class CPDFSDK_Annot;
 
 class CBA_FontMap : public CPWL_FontMap {
  public:
   CBA_FontMap(CPDFSDK_Annot* pAnnot, IFX_SystemHandler* pSystemHandler);
   CBA_FontMap(CPDF_Document* pDocument,
               CPDF_Dictionary* pAnnotDict,
               IFX_SystemHandler* pSystemHandler);
 
-  virtual ~CBA_FontMap();
+  ~CBA_FontMap() override;
 
   virtual void Initial(const FX_CHAR* fontname = NULL);
 
  public:
   void SetDefaultFont(CPDF_Font* pFont, const CFX_ByteString& sFontName);
 
   void Reset();
   void SetAPType(const CFX_ByteString& sAPType);
 
  protected:
@@ skipping 12 matching lines @@
  private:
   CPDF_Document* m_pDocument;
   CPDF_Dictionary* m_pAnnotDict;
   CPDF_Font* m_pDefaultFont;
   CFX_ByteString m_sDefaultFontName;
 
   CFX_ByteString m_sAPType;
 };
 
 #endif  // FPDFSDK_INCLUDE_FORMFILLER_FFL_CBA_FONTMAP_H_