Style Change: NULL->nullptr

bench/BenchLogger.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "BenchLogger.h"
 
 #include "SkStream.h"
 
 BenchLogger::BenchLogger()
-: fFileStream(NULL) {}
+: fFileStream(nullptr) {}
 
 BenchLogger::~BenchLogger() {
     if (fFileStream) {
         delete fFileStream;
     }
 }
 
 bool BenchLogger::SetLogFile(const char *file) {
     fFileStream = new SkFILEWStream(file);
     return fFileStream->isValid();
 }
 
 void BenchLogger::fileWrite(const char msg[], size_t size) {
     if (fFileStream && fFileStream->isValid()) {
         fFileStream->write(msg, size);
     }
 }