SkImage now has makeShader to return sk_sp

tests/FlattenableFactoryToName.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 "SkAlphaThresholdFilter.h"
 #include "SkImage.h"
 #include "Test.h"
@@ skipping 18 matching lines @@
     rects[1] = SkIRect::MakeXYWH(150, 0, 200, 500);
     SkRegion region;
     region.setRects(rects, 2);
     SkAutoTUnref<SkImageFilter> filter( SkAlphaThresholdFilter::Create(region, 0.2f, 0.7f));
     test_flattenable(r, filter, "SkAlphaThresholdFilter()");
 
     SkBitmap bm;
     bm.allocN32Pixels(8, 8);
     bm.eraseColor(SK_ColorCYAN);
     SkAutoTUnref<SkImage> image(SkImage::NewFromBitmap(bm));
-    SkAutoTUnref<SkShader> shader(image->newShader(SkShader::kClamp_TileMode,
-                                                   SkShader::kClamp_TileMode));
-    test_flattenable(r, shader, "SkImage::newShader()");
+    auto shader = image->makeShader(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode);
+    test_flattenable(r, shader.get(), "SkImage::newShader()");
 }