Reland of [2] of "switch colorfilters to sk_sp (patchset #11 id:200001 of https://codereview.chromium.o…

include/effects/SkLumaColorFilter.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkLumaColorFilter_DEFINED
 #define SkLumaColorFilter_DEFINED
 
 #include "SkColorFilter.h"
 
 /**
  *  Luminance-to-alpha color filter, as defined in
  *  http://www.w3.org/TR/SVG/masking.html#Masking
  *  http://www.w3.org/TR/css-masking/#MaskValues
  *
  *  The resulting color is black with transparency equal to the
  *  luminance value modulated by alpha:
  *
  *    C' = [ Lum * a, 0, 0, 0 ]
  *
  */
 class SK_API SkLumaColorFilter : public SkColorFilter {
 public:
-    static SkColorFilter* Create();
+    static sk_sp<SkColorFilter> Make();
+
+#ifdef SK_SUPPORT_LEGACY_COLORFILTER_PTR
+    static SkColorFilter* Create() { return Make().release(); }
+#endif
 
     void filterSpan(const SkPMColor src[], int count, SkPMColor[]) const override;
 
 #if SK_SUPPORT_GPU
     const GrFragmentProcessor* asFragmentProcessor(GrContext*) const override;
 #endif
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLumaColorFilter)
 
 protected:
     void flatten(SkWriteBuffer&) const override;
 
 private:
     SkLumaColorFilter();
 
     typedef SkColorFilter INHERITED;
 };
 
 #endif