Style Change: NULL->nullptr

gm/bitmaprecttest.cpp

Index: gm/bitmaprecttest.cpp
diff --git a/gm/bitmaprecttest.cpp b/gm/bitmaprecttest.cpp
index 878029a8dd7d750434ca7ac70008e1cebdcf1714..741cc9ddfdbf4336c2265189508b70c80b125eb5 100644
--- a/gm/bitmaprecttest.cpp
+++ b/gm/bitmaprecttest.cpp
@@ -38,7 +38,7 @@ static void test_bitmaprect(SkCanvas* canvas) {
     SkBitmap bm;
     make_bm(&bm);
 
-    canvas->drawBitmap(bm, 150, 45, NULL);
+    canvas->drawBitmap(bm, 150, 45, nullptr);
 
     SkScalar scale = 0.472560018f;
     canvas->save();
@@ -47,7 +47,7 @@ static void test_bitmaprect(SkCanvas* canvas) {
     canvas->restore();
 
     canvas->scale(-1, 1);
-    canvas->drawBitmap(bm, -310, 45, NULL);
+    canvas->drawBitmap(bm, -310, 45, nullptr);
 }
 
 class BitmapRectTestGM : public skiagm::GM {