Fix IWYU in formfiller/ directory.

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 _RAO_FONTMAP_H_
 #define _RAO_FONTMAP_H_
 
-#if _MSC_VER > 1000
-#pragma once
-#endif // _MSC_VER > 1000
+#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();
 
@@ skipping 18 matching lines @@
 private:
         CPDF_Document*                          m_pDocument;
         CPDF_Dictionary*                        m_pAnnotDict;
         CPDF_Font*                                      m_pDefaultFont;
         CFX_ByteString                          m_sDefaultFontName;
         
         CFX_ByteString                          m_sAPType;
 };
 
 #endif // _RAO_FONTMAP_H_