Style Change: NULL->nullptr

tests/TLSTest.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 "SkGraphics.h"
 #include "SkPaint.h"
 #include "SkTLS.h"
@@ skipping 38 matching lines @@
 
     for (i = 0; i < N; ++i) {
         delete threads[i];
     }
 }
 
 static int32_t gCounter;
 
 static void* FakeCreateTLS() {
     sk_atomic_inc(&gCounter);
-    return NULL;
+    return nullptr;
 }
 
 static void FakeDeleteTLS(void*) {
     sk_atomic_dec(&gCounter);
 }
 
 static void testTLSDestructor(void*) {
     SkTLS::Get(FakeCreateTLS, FakeDeleteTLS);
 }
 
 DEF_TEST(TLS, reporter) {
     // TODO: Disabled for now to work around
     // http://code.google.com/p/skia/issues/detail?id=619
     // ('flaky segfault in TLS test on Shuttle_Ubuntu12 buildbots')
     if( false ) test_threads(&thread_main);
 
     // Test to ensure that at thread destruction, TLS destructors
     // have been called.
     test_threads(&testTLSDestructor);
     REPORTER_ASSERT(reporter, 0 == gCounter);
 }