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

Review URL: https://codereview.chromium.org/1316233002
diff --git a/src/gpu/effects/GrOvalEffect.cpp b/src/gpu/effects/GrOvalEffect.cpp
index dec6ae2..0f3df7d 100644
--- a/src/gpu/effects/GrOvalEffect.cpp
+++ b/src/gpu/effects/GrOvalEffect.cpp
@@ -360,7 +360,7 @@
 
 GrFragmentProcessor* GrOvalEffect::Create(GrPrimitiveEdgeType edgeType, const SkRect& oval) {
     if (kHairlineAA_GrProcessorEdgeType == edgeType) {
-        return NULL;
+        return nullptr;
     }
     SkScalar w = oval.width();
     SkScalar h = oval.height();
@@ -373,5 +373,5 @@
         return EllipseEffect::Create(edgeType, SkPoint::Make(oval.fLeft + w, oval.fTop + h), w, h);
     }
 
-    return NULL;
+    return nullptr;
 }