Refactor fx_font part 2

xfa/fgas/font/fgas_gefont.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 XFA_FGAS_FONT_FGAS_GEFONT_H_
 #define XFA_FGAS_FONT_FGAS_GEFONT_H_
 
 #include <map>
 
 #include "core/fxcrt/include/fx_memory.h"
 #include "xfa/fgas/crt/fgas_utils.h"
 #include "xfa/fgas/font/fgas_font.h"
 
 #define FXFONT_SUBST_ITALIC 0x02
 
+class CFX_UnicodeEncoding;
 class CXFA_PDFFontMgr;
 
 class CFGAS_GEFont {
  public:
   static CFGAS_GEFont* LoadFont(const FX_WCHAR* pszFontFamily,
                                 uint32_t dwFontStyles,
                                 uint16_t wCodePage,
                                 IFGAS_FontMgr* pFontMgr);
   static CFGAS_GEFont* LoadFont(CFX_Font* pExtFont, IFGAS_FontMgr* pFontMgr);
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
@@ skipping 73 matching lines @@
   std::unique_ptr<CFX_UnicodeEncoding> m_pFontEncoding;
   std::unique_ptr<CFX_DiscreteArrayTemplate<uint16_t>> m_pCharWidthMap;
   std::unique_ptr<CFX_MassArrayTemplate<CFX_Rect>> m_pRectArray;
   std::unique_ptr<CFX_MapPtrToPtr> m_pBBoxMap;
   CXFA_PDFFontMgr* m_pProvider;  // not owned.
   CFX_ArrayTemplate<CFGAS_GEFont*> m_SubstFonts;
   std::map<FX_WCHAR, CFGAS_GEFont*> m_FontMapper;
 };
 
 #endif  // XFA_FGAS_FONT_FGAS_GEFONT_H_