Try out new refFoo pattern on GrStyle

Change-Id: Ic7f30e3730a3431adf365d729320fe50f38dcea8
Reviewed-on: https://skia-review.googlesource.com/6907
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrSWMaskHelper.cpp b/src/gpu/GrSWMaskHelper.cpp
index 839ec25..f85bbe6 100644
--- a/src/gpu/GrSWMaskHelper.cpp
+++ b/src/gpu/GrSWMaskHelper.cpp
@@ -56,7 +56,7 @@
  */
 void GrSWMaskHelper::drawShape(const GrShape& shape, SkRegion::Op op, GrAA aa, uint8_t alpha) {
     SkPaint paint;
-    paint.setPathEffect(sk_ref_sp(shape.style().pathEffect()));
+    paint.setPathEffect(shape.style().refPathEffect());
     shape.style().strokeRec().applyToPaint(&paint);
     paint.setAntiAlias(GrAA::kYes == aa);