Get rid of NULLs in fpdfsdk/

fpdfsdk/pdfwindow/PWL_Utils.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_PDFWINDOW_PWL_UTILS_H_
 #define FPDFSDK_PDFWINDOW_PWL_UTILS_H_
 
 #include "core/fpdfdoc/include/cpvt_wordrange.h"
@@ skipping 150 matching lines @@
                                                int32_t nLayOut);
   static CFX_ByteString GetCheckBoxAppStream(const CFX_FloatRect& rcBBox,
                                              int32_t nStyle,
                                              const CPWL_Color& crText);
   static CFX_ByteString GetRadioButtonAppStream(const CFX_FloatRect& rcBBox,
                                                 int32_t nStyle,
                                                 const CPWL_Color& crText);
 
   static CFX_ByteString GetEditAppStream(IFX_Edit* pEdit,
                                          const CFX_FloatPoint& ptOffset,
-                                         const CPVT_WordRange* pRange = NULL,
+                                         const CPVT_WordRange* pRange = nullptr,
                                          FX_BOOL bContinuous = TRUE,
                                          uint16_t SubWord = 0);
   static CFX_ByteString GetEditSelAppStream(
       IFX_Edit* pEdit,
       const CFX_FloatPoint& ptOffset,
-      const CPVT_WordRange* pRange = NULL);
+      const CPVT_WordRange* pRange = nullptr);
   static CFX_ByteString GetTextAppStream(const CFX_FloatRect& rcBBox,
                                          IPVT_FontMap* pFontMap,
                                          const CFX_WideString& sText,
                                          int32_t nAlignmentH,
                                          int32_t nAlignmentV,
                                          FX_FLOAT fFontSize,
                                          FX_BOOL bMultiLine,
                                          FX_BOOL bAutoReturn,
                                          const CPWL_Color& crText);
   static CFX_ByteString GetDropButtonAppStream(const CFX_FloatRect& rcBBox);
@@ skipping 202 matching lines @@
                               CFX_PathData& path,
                               const CFX_FloatRect& crBBox,
                               const PWL_PATH_TYPE type);
   static void GetGraphics_Foxit(CFX_ByteString& sPathData,
                                 CFX_PathData& path,
                                 const CFX_FloatRect& crBBox,
                                 const PWL_PATH_TYPE type);
 };
 
 #endif  // FPDFSDK_PDFWINDOW_PWL_UTILS_H_