Get rid of NULLs in core/

core/fxge/include/fx_font.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 CORE_FXGE_INCLUDE_FX_FONT_H_
 #define CORE_FXGE_INCLUDE_FX_FONT_H_
 
 #include <map>
@@ skipping 65 matching lines @@
                  int weight,
                  int italic_angle,
                  int CharsetCP,
                  FX_BOOL bVertical = FALSE);
   FX_BOOL LoadEmbedded(const uint8_t* data, uint32_t size);
   FXFT_Face GetFace() const { return m_Face; }
 
 #ifdef PDF_ENABLE_XFA
   FX_BOOL LoadFile(IFX_FileRead* pFile,
                    int nFaceIndex = 0,
-                   int* pFaceCount = NULL);
+                   int* pFaceCount = nullptr);
 
   FX_BOOL LoadClone(const CFX_Font* pFont);
   CFX_SubstFont* GetSubstFont() const { return m_pSubstFont; }
   void SetFace(FXFT_Face face) { m_Face = face; }
   void SetSubstFont(CFX_SubstFont* subst) { m_pSubstFont = subst; }
 #else   // PDF_ENABLE_XFA
   const CFX_SubstFont* GetSubstFont() const { return m_pSubstFont; }
 #endif  // PDF_ENABLE_XFA
 
   CFX_PathData* LoadGlyphPath(uint32_t glyph_index, int dest_width = 0);
@@ skipping 440 matching lines @@
                            FX_FLOAT retinaScaleX = 1.0f,
                            FX_FLOAT retinaScaleY = 1.0f);
 
 CFX_ByteString GetNameFromTT(const uint8_t* name_table,
                              uint32_t name_table_size,
                              uint32_t name);
 
 int PDF_GetStandardFontName(CFX_ByteString* name);
 
 #endif  // CORE_FXGE_INCLUDE_FX_FONT_H_