Fix a bad virtual keyword removal from commit 0f6b51c.

fpdfsdk/include/pdfwindow/PWL_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_PDFWINDOW_PWL_FONTMAP_H_
 #define FPDFSDK_INCLUDE_PDFWINDOW_PWL_FONTMAP_H_
 
 #include "fpdfsdk/include/fxedit/fx_edit.h"
@@ skipping 62 matching lines @@
   CPDF_Font* AddFontToDocument(CPDF_Document* pDoc,
                                CFX_ByteString& sFontName,
                                uint8_t nCharset);
   static FX_BOOL IsStandardFont(const CFX_ByteString& sFontName);
   CPDF_Font* AddStandardFont(CPDF_Document* pDoc, CFX_ByteString& sFontName);
   CPDF_Font* AddSystemFont(CPDF_Document* pDoc,
                            CFX_ByteString& sFontName,
                            uint8_t nCharset);
 
  protected:
-  void Initial(const FX_CHAR* fontname = NULL);
-  CPDF_Document* GetDocument();
-  CPDF_Font* FindFontSameCharset(CFX_ByteString& sFontAlias, int32_t nCharset);
-  void AddedFont(CPDF_Font* pFont, const CFX_ByteString& sFontAlias);
+  virtual void Initialize();
+  virtual CPDF_Document* GetDocument();
+  virtual CPDF_Font* FindFontSameCharset(CFX_ByteString& sFontAlias,
+                                         int32_t nCharset);
+  virtual void AddedFont(CPDF_Font* pFont, const CFX_ByteString& sFontAlias);
 
   FX_BOOL KnowWord(int32_t nFontIndex, FX_WORD word);
 
   void Empty();
   int32_t GetFontIndex(const CFX_ByteString& sFontName,
                        int32_t nCharset,
                        FX_BOOL bFind);
   int32_t GetPWLFontIndex(FX_WORD word, int32_t nCharset);
   int32_t AddFontData(CPDF_Font* pFont,
                       const CFX_ByteString& sFontAlias,
@@ skipping 22 matching lines @@
   CPDF_Document* m_pPDFDoc;
   IFX_SystemHandler* m_pSystemHandler;
 };
 
 class CPWL_DocFontMap : public CPWL_FontMap {
  public:
   CPWL_DocFontMap(IFX_SystemHandler* pSystemHandler,
                   CPDF_Document* pAttachedDoc);
   ~CPWL_DocFontMap() override;
 
-  virtual CPDF_Document* GetDocument();
+ private:
+  // CPWL_FontMap:
+  CPDF_Document* GetDocument() override;
 
- private:
   CPDF_Document* m_pAttachedDoc;
 };
 
 #endif  // FPDFSDK_INCLUDE_PDFWINDOW_PWL_FONTMAP_H_