change flattenable factory to return sk_sp

tests/QuickRejectTest.cpp

Index: tests/QuickRejectTest.cpp
diff --git a/tests/QuickRejectTest.cpp b/tests/QuickRejectTest.cpp
index 582789aa7561930847280fe374c5273d87972dee..6a978743f604bde2902dd6a30006830bed711c59 100644
--- a/tests/QuickRejectTest.cpp
+++ b/tests/QuickRejectTest.cpp
@@ -49,7 +49,7 @@ private:
     };
 };
 
-SkFlattenable* TestLooper::CreateProc(SkReadBuffer&) { return new TestLooper; }
+sk_sp<SkFlattenable> TestLooper::CreateProc(SkReadBuffer&) { return sk_make_sp<TestLooper>(); }
 
 static void test_drawBitmap(skiatest::Reporter* reporter) {
     SkBitmap src;