Style Change: NULL->nullptr
DOCS_PREVIEW= https://skia.org/?cl=1316233002

Review URL: https://codereview.chromium.org/1316233002
diff --git a/bench/BenchLogger.cpp b/bench/BenchLogger.cpp
index 5e74552..7eae514 100644
--- a/bench/BenchLogger.cpp
+++ b/bench/BenchLogger.cpp
@@ -10,7 +10,7 @@
 #include "SkStream.h"
 
 BenchLogger::BenchLogger()
-: fFileStream(NULL) {}
+: fFileStream(nullptr) {}
 
 BenchLogger::~BenchLogger() {
     if (fFileStream) {