Revert of 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 18b2485a30ced845ad912109988cfdbe8458974c..0ca6342d563a6340a4f918bc17d8faa9aeea0293 100644
--- a/src/effects/SkLumaColorFilter.cpp
+++ b/src/effects/SkLumaColorFilter.cpp
@@ -37,9 +37,7 @@
     }
 }
 
-sk_sp<SkColorFilter> SkLumaColorFilter::Make() {
-    return sk_sp<SkColorFilter>(new SkLumaColorFilter);
-}
+SkColorFilter* SkLumaColorFilter::Create() { return new SkLumaColorFilter; }
 
 SkLumaColorFilter::SkLumaColorFilter() : INHERITED() {}