Allow external font-path configuration from pdfium_test.

fpdfsdk/src/fpdf_sysfontinfo.cpp

 // 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
 
 #include "../../public/fpdf_sysfontinfo.h"
 #include "../include/fsdk_define.h"
 #include "../include/pdfwindow/PWL_FontMap.h"
 
@@ skipping 150 matching lines @@
            ->m_pFontInfo->GetFontCharset(hFont, charset))
     return 0;
   return charset;
 }
 
 static void DefaultDeleteFont(struct _FPDF_SYSFONTINFO* pThis, void* hFont) {
   ((FPDF_SYSFONTINFO_DEFAULT*)pThis)->m_pFontInfo->DeleteFont(hFont);
 }
 
 DLLEXPORT FPDF_SYSFONTINFO* STDCALL FPDF_GetDefaultSystemFontInfo() {
-  IFX_SystemFontInfo* pFontInfo = IFX_SystemFontInfo::CreateDefault();
+  IFX_SystemFontInfo* pFontInfo = IFX_SystemFontInfo::CreateDefault(nullptr);
   if (pFontInfo == NULL)
     return NULL;
 
   FPDF_SYSFONTINFO_DEFAULT* pFontInfoExt =
       FX_Alloc(FPDF_SYSFONTINFO_DEFAULT, 1);
   pFontInfoExt->DeleteFont = DefaultDeleteFont;
   pFontInfoExt->EnumFonts = DefaultEnumFonts;
   pFontInfoExt->GetFaceName = DefaultGetFaceName;
   pFontInfoExt->GetFont = DefaultGetFont;
   pFontInfoExt->GetFontCharset = DefaultGetFontCharset;
   pFontInfoExt->GetFontData = DefaultGetFontData;
   pFontInfoExt->MapFont = DefaultMapFont;
   pFontInfoExt->Release = DefaultRelease;
   pFontInfoExt->version = 1;
   pFontInfoExt->m_pFontInfo = pFontInfo;
   return pFontInfoExt;
 }