Update SkImageSource to sk_sp

gm/imagefilterstransformed.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 "sk_tool_utils.h"
 #include "SkBlurImageFilter.h"
 #include "SkColor.h"
@@ skipping 45 matching lines @@
 
     SkISize onISize() override { return SkISize::Make(420, 240); }
 
     void onOnceBeforeDraw() override {
         fCheckerboard = SkImage::MakeFromBitmap(
             sk_tool_utils::create_checkerboard_bitmap(64, 64, 0xFFA0A0A0, 0xFF404040, 8));
         fGradientCircle = make_gradient_circle(64, 64);
     }
 
     void onDraw(SkCanvas* canvas) override {
-        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));
         SkImageFilter* filters[] = {
             SkBlurImageFilter::Create(12, 0),
             SkDropShadowImageFilter::Create(0, 15, 8, 0, SK_ColorGREEN,
                 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode),
             SkDisplacementMapEffect::Create(SkDisplacementMapEffect::kR_ChannelSelectorType,
                                             SkDisplacementMapEffect::kR_ChannelSelectorType,
                                             12,
                                             gradient.get(),
                                             checkerboard.get()),
             SkDilateImageFilter::Create(2, 2, checkerboard.get()),
@@ skipping 38 matching lines @@
     sk_sp<SkImage> fCheckerboard;
     sk_sp<SkImage> fGradientCircle;
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new ImageFiltersTransformedGM; )
 
 }