Reland of "more shader-->sp conversions (patchset #5 id:80001 of https://codereview.chromium.org/1789633002/ )"

This reverts commit 9283d20afc27571f7a871d1bd1100dd5df584941.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1793303002

Review URL: https://codereview.chromium.org/1793303002
diff --git a/tests/PaintImageFilterTest.cpp b/tests/PaintImageFilterTest.cpp
index b71fe47..f1c0c2e 100644
--- a/tests/PaintImageFilterTest.cpp
+++ b/tests/PaintImageFilterTest.cpp
@@ -30,10 +30,9 @@
     SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1};
     SkScalar radius = SkIntToScalar(5);
 
-    SkAutoTUnref<SkShader> s(SkGradientShader::CreateRadial(
-        center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode));
     SkPaint gradientPaint;
-    gradientPaint.setShader(s);
+    gradientPaint.setShader(SkGradientShader::MakeRadial(
+        center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode));
 
     // Test using the image filter
     {
@@ -77,10 +76,9 @@
     SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1};
     SkScalar radius = SkIntToScalar(5);
 
-    SkAutoTUnref<SkShader> s(SkGradientShader::CreateRadial(
-        center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode));
     SkPaint gradientPaint;
-    gradientPaint.setShader(s);
+    gradientPaint.setShader(SkGradientShader::MakeRadial(
+        center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode));
 
     // Test using the image filter
     {