Style Change: NULL->nullptr

src/ports/SkTLS_none.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkTLS.h"
 
-static void* gSpecific = NULL;
+static void* gSpecific = nullptr;
 
 void* SkTLS::PlatformGetSpecific(bool) {
     return gSpecific;
 }
 
 void SkTLS::PlatformSetSpecific(void* ptr) {
     gSpecific = ptr;
 }