move setshader to sk_sp

gm/lightingshader.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 
 #include "SkLightingShader.h"
@@ skipping 80 matching lines @@
         SkRect bitmapBounds = SkRect::MakeIWH(fDiffuse.width(), fDiffuse.height());
 
         SkMatrix matrix;
         matrix.setRectToRect(bitmapBounds, r, SkMatrix::kFill_ScaleToFit);
     
         const SkMatrix& ctm = canvas->getTotalMatrix();
 
         // TODO: correctly pull out the pure rotation
         SkVector invNormRotation = { ctm[SkMatrix::kMScaleX], ctm[SkMatrix::kMSkewY] };
 
-        SkAutoTUnref<SkShader> fShader(SkLightingShader::Create(
-                                                        fDiffuse,
-                                                        fNormalMaps[mapType],
-                                                        fLights,
-                                                        invNormRotation, &matrix, &matrix));
-
         SkPaint paint;
-        paint.setShader(fShader);
+        paint.setShader(SkLightingShader::Make(fDiffuse, fNormalMaps[mapType], fLights,
+                                               invNormRotation, &matrix, &matrix));
 
         canvas->drawRect(r, paint);
     }
 
     void onDraw(SkCanvas* canvas) override {
         SkMatrix m;
         SkRect r;
 
         {
             r = SkRect::MakeWH(SkIntToScalar(kTexSize), SkIntToScalar(kTexSize));
@@ skipping 53 matching lines @@
 
     SkAutoTUnref<const SkLightingShader::Lights>  fLights;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new LightingShaderGM;)
 }