more shader-->sp conversions

tests/ImageFilterTest.cpp

Index: tests/ImageFilterTest.cpp
diff --git a/tests/ImageFilterTest.cpp b/tests/ImageFilterTest.cpp
index 3def8f5cca82134f36ef733f9e20d38f7381bb22..dfb0d35e484a0a0350804f34806dca015f774d4e 100644
--- a/tests/ImageFilterTest.cpp
+++ b/tests/ImageFilterTest.cpp
@@ -374,12 +374,9 @@ static SkBitmap 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 bitmap;
 }