Revert of switch colorfilters to sk_sp

include/effects/SkLumaColorFilter.h

Index: include/effects/SkLumaColorFilter.h
diff --git a/include/effects/SkLumaColorFilter.h b/include/effects/SkLumaColorFilter.h
index 3a68607b1977dee04471ef958c3a71a5153c1c1c..8dd519af4a77fe5ea142e9d8a15c4bfbc4c4a2e5 100644
--- a/include/effects/SkLumaColorFilter.h
+++ b/include/effects/SkLumaColorFilter.h
@@ -23,11 +23,7 @@
  */
 class SK_API SkLumaColorFilter : public SkColorFilter {
 public:
-    static sk_sp<SkColorFilter> Make();
-
-#ifdef SK_SUPPORT_LEGACY_COLORFILTER_PTR
-    static SkColorFilter* Create() { return Make().release(); }
-#endif
+    static SkColorFilter* Create();
 
     void filterSpan(const SkPMColor src[], int count, SkPMColor[]) const override;