switch colorfilters to sk_sp

src/effects/SkLumaColorFilter.cpp

Index: src/effects/SkLumaColorFilter.cpp
diff --git a/src/effects/SkLumaColorFilter.cpp b/src/effects/SkLumaColorFilter.cpp
index 0ca6342d563a6340a4f918bc17d8faa9aeea0293..18b2485a30ced845ad912109988cfdbe8458974c 100644
--- a/src/effects/SkLumaColorFilter.cpp
+++ b/src/effects/SkLumaColorFilter.cpp
@@ -37,7 +37,9 @@ void SkLumaColorFilter::filterSpan(const SkPMColor src[], int count,
     }
 }
 
-SkColorFilter* SkLumaColorFilter::Create() { return new SkLumaColorFilter; }
+sk_sp<SkColorFilter> SkLumaColorFilter::Make() {
+    return sk_sp<SkColorFilter>(new SkLumaColorFilter);
+}
 
 SkLumaColorFilter::SkLumaColorFilter() : INHERITED() {}