Update SkImageSource to sk_sp

gm/imagefiltersscaled.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "sk_tool_utils.h"
 #include "SkBlurImageFilter.h"
 #include "SkColor.h"
@@ skipping 34 matching lines @@
 
     void onOnceBeforeDraw() override {
         fCheckerboard = SkImage::MakeFromBitmap(
             sk_tool_utils::create_checkerboard_bitmap(64, 64, 0xFFA0A0A0, 0xFF404040, 8));
         fGradientCircle = MakeGradientCircle(64, 64);
     }
 
     void onDraw(SkCanvas* canvas) override {
         canvas->clear(SK_ColorBLACK);
 
-        SkAutoTUnref<SkImageFilter> gradient(SkImageSource::Create(fGradientCircle.get()));
-        SkAutoTUnref<SkImageFilter> checkerboard(SkImageSource::Create(fCheckerboard.get()));
+        sk_sp<SkImageFilter> gradient(SkImageSource::Make(fGradientCircle));
+        sk_sp<SkImageFilter> checkerboard(SkImageSource::Make(fCheckerboard));
         sk_sp<SkShader> noise(SkPerlinNoiseShader::MakeFractalNoise(
             SkDoubleToScalar(0.1), SkDoubleToScalar(0.05), 1, 0));
         SkPaint noisePaint;
         noisePaint.setShader(noise);
 
         SkPoint3 pointLocation = SkPoint3::Make(0, 0, SkIntToScalar(10));
         SkPoint3 spotLocation = SkPoint3::Make(SkIntToScalar(-10),
                                                SkIntToScalar(-10),
                                                SkIntToScalar(20));
         SkPoint3 spotTarget = SkPoint3::Make(SkIntToScalar(40), SkIntToScalar(40), 0);
@@ skipping 88 matching lines @@
 
     sk_sp<SkImage> fCheckerboard, fGradientCircle;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new ImageFiltersScaledGM;)
 }