more shader-->sp conversions

gm/imagefilterstransformed.cpp

Index: gm/imagefilterstransformed.cpp
diff --git a/gm/imagefilterstransformed.cpp b/gm/imagefilterstransformed.cpp
index 8e59b9242c4b0545bc1133c3a1698cf7130cd4cd..5b9d702efb0f9e40049c9c1294c2c06fc9bd6138 100644
--- a/gm/imagefilterstransformed.cpp
+++ b/gm/imagefilterstransformed.cpp
@@ -36,12 +36,9 @@ static SkImage* make_gradient_circle(int width, int height) {
     SkColor colors[2];
     colors[0] = SK_ColorWHITE;
     colors[1] = SK_ColorBLACK;
-    SkAutoTUnref<SkShader> shader(
-        SkGradientShader::CreateRadial(SkPoint::Make(x, y), radius, colors, nullptr, 2,
-                                       SkShader::kClamp_TileMode)
-    );
     SkPaint paint;
-    paint.setShader(shader);
+    paint.setShader(SkGradientShader::MakeRadial(SkPoint::Make(x, y), radius, colors, nullptr, 2,
+                                                 SkShader::kClamp_TileMode));
     canvas->drawCircle(x, y, radius, paint);
 
     return surface->newImageSnapshot();