switch patheffects over to sk_sp

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1813553005

Review URL: https://codereview.chromium.org/1813553005
diff --git a/tests/GpuDrawPathTest.cpp b/tests/GpuDrawPathTest.cpp
index d454d9b..1f9361a 100644
--- a/tests/GpuDrawPathTest.cpp
+++ b/tests/GpuDrawPathTest.cpp
@@ -49,7 +49,7 @@
 }
 
 static void fill_and_stroke(SkCanvas* canvas, const SkPath& p1, const SkPath& p2,
-                            SkPathEffect* effect) {
+                            sk_sp<SkPathEffect> effect) {
     SkPaint paint;
     paint.setAntiAlias(true);
     paint.setPathEffect(effect);
@@ -73,8 +73,7 @@
     fill_and_stroke(canvas, oval1, oval2, nullptr);
 
     const SkScalar intervals[] = { 1, 1 };
-    SkAutoTUnref<SkPathEffect> dashEffect(SkDashPathEffect::Create(intervals, 2, 0));
-    fill_and_stroke(canvas, oval1, oval2, dashEffect);
+    fill_and_stroke(canvas, oval1, oval2, SkDashPathEffect::Make(intervals, 2, 0));
 }
 
 DEF_GPUTEST_FOR_ALL_CONTEXTS(GpuDrawPath, reporter, context) {