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

Review URL: https://codereview.chromium.org/1316233002
diff --git a/gm/blurrect.cpp b/gm/blurrect.cpp
index 0726f2c..6b73540 100644
--- a/gm/blurrect.cpp
+++ b/gm/blurrect.cpp
@@ -235,7 +235,7 @@
                     canvas->save();
                     canvas->translate((SkScalar)cur_x, (SkScalar)cur_y);
                     canvas->translate(-(bm.width() - r.width())/2, -(bm.height()-r.height())/2);
-                    canvas->drawBitmap(bm, 0.f, 0.f, NULL);
+                    canvas->drawBitmap(bm, 0.f, 0.f, nullptr);
                     canvas->restore();
 
                     cur_x += bm.width() + fPadding;
@@ -313,7 +313,7 @@
         center_x = (canvas_size.fWidth - mask.fBounds.width())/2;
         center_y = (canvas_size.fHeight - mask.fBounds.height())/2;
 
-        canvas->drawBitmap(bm, SkIntToScalar(center_x), SkIntToScalar(center_y), NULL);
+        canvas->drawBitmap(bm, SkIntToScalar(center_x), SkIntToScalar(center_y), nullptr);
     }
 
 private: