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

Review URL: https://codereview.chromium.org/1316233002
diff --git a/src/effects/gradients/SkRadialGradient.cpp b/src/effects/gradients/SkRadialGradient.cpp
index 7e24949..3a1a21e 100644
--- a/src/effects/gradients/SkRadialGradient.cpp
+++ b/src/effects/gradients/SkRadialGradient.cpp
@@ -237,7 +237,7 @@
 SkFlattenable* SkRadialGradient::CreateProc(SkReadBuffer& buffer) {
     DescriptorScope desc;
     if (!desc.unflatten(buffer)) {
-        return NULL;
+        return nullptr;
     }
     const SkPoint center = buffer.readPoint();
     const SkScalar radius = buffer.readScalar();
@@ -495,7 +495,7 @@
     GrColor paintColor;
     GrFragmentProcessor* fp;
     SkAssertResult(shader->asFragmentProcessor(d->fContext, paint,
-                                               GrTest::TestMatrix(d->fRandom), NULL,
+                                               GrTest::TestMatrix(d->fRandom), nullptr,
                                                &paintColor, d->fProcDataManager, &fp));
     return fp;
 }