Make core/editing/ files to match Blink coding style

Source/core/editing/SmartReplaceCF.cpp

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 18 matching lines @@
 #include "config.h"
 #include "core/editing/SmartReplace.h"
 
 #include <CoreFoundation/CFCharacterSet.h>
 #include <CoreFoundation/CFString.h>
 
 namespace blink {
 
 static CFMutableCharacterSetRef getSmartSet(bool isPreviousCharacter)
 {
-    static CFMutableCharacterSetRef preSmartSet = NULL;
-    static CFMutableCharacterSetRef postSmartSet = NULL;
+    static CFMutableCharacterSetRef preSmartSet = nullptr;
+    static CFMutableCharacterSetRef postSmartSet = nullptr;
     CFMutableCharacterSetRef smartSet = isPreviousCharacter ? preSmartSet : postSmartSet;
     if (!smartSet) {
         smartSet = CFCharacterSetCreateMutable(kCFAllocatorDefault);
         CFCharacterSetAddCharactersInString(smartSet, isPreviousCharacter ? CFSTR("([\"\'#$/-`{") : CFSTR(")].,;:?\'!\"%*-/}"));
         CFCharacterSetUnion(smartSet, CFCharacterSetGetPredefined(kCFCharacterSetWhitespaceAndNewline));
         // Adding CJK ranges
         CFCharacterSetAddCharactersInRange(smartSet, CFRangeMake(0x1100, 256)); // Hangul Jamo (0x1100 - 0x11FF)
         CFCharacterSetAddCharactersInRange(smartSet, CFRangeMake(0x2E80, 352)); // CJK & Kangxi Radicals (0x2E80 - 0x2FDF)
         CFCharacterSetAddCharactersInRange(smartSet, CFRangeMake(0x2FF0, 464)); // Ideograph Descriptions, CJK Symbols, Hiragana, Katakana, Bopomofo, Hangul Compatibility Jamo, Kanbun, & Bopomofo Ext (0x2FF0 - 0x31BF)
         CFCharacterSetAddCharactersInRange(smartSet, CFRangeMake(0x3200, 29392)); // Enclosed CJK, CJK Ideographs (Uni Han & Ext A), & Yi (0x3200 - 0xA4CF)
@@ skipping 13 matching lines @@
     }
     return smartSet;
 }
 
 bool isCharacterSmartReplaceExempt(UChar32 c, bool isPreviousCharacter)
 {
     return CFCharacterSetIsLongCharacterMember(getSmartSet(isPreviousCharacter), c);
 }
 
 }