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/gm/texturedomaineffect.cpp b/gm/texturedomaineffect.cpp
index 72e40fe..6bd6490 100644
--- a/gm/texturedomaineffect.cpp
+++ b/gm/texturedomaineffect.cpp
@@ -50,24 +50,24 @@
         SkPaint paint;
 
         SkColor colors1[] = { SK_ColorCYAN, SK_ColorLTGRAY, SK_ColorGRAY };
-        paint.setShader(SkGradientShader::CreateSweep(65.f, 75.f, colors1,
-                                                      nullptr, SK_ARRAY_COUNT(colors1)))->unref();
-        canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f,
-                                         fBmp.width() + 10.f, fBmp.height() + 10.f), paint);
+        paint.setShader(SkGradientShader::MakeSweep(65.f, 75.f, colors1, nullptr,
+                                                    SK_ARRAY_COUNT(colors1)));
+        canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f, fBmp.width() + 10.f, fBmp.height() + 10.f),
+                        paint);
 
         SkColor colors2[] = { SK_ColorMAGENTA, SK_ColorLTGRAY, SK_ColorYELLOW };
-        paint.setShader(SkGradientShader::CreateSweep(45.f, 55.f, colors2, nullptr,
-                                                      SK_ARRAY_COUNT(colors2)))->unref();
+        paint.setShader(SkGradientShader::MakeSweep(45.f, 55.f, colors2, nullptr,
+                                                    SK_ARRAY_COUNT(colors2)));
         paint.setXfermodeMode(SkXfermode::kDarken_Mode);
-        canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f,
-                                         fBmp.width() + 10.f, fBmp.height() + 10.f), paint);
+        canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f, fBmp.width() + 10.f, fBmp.height() + 10.f),
+                        paint);
 
         SkColor colors3[] = { SK_ColorBLUE, SK_ColorLTGRAY, SK_ColorGREEN };
-        paint.setShader(SkGradientShader::CreateSweep(25.f, 35.f, colors3, nullptr,
-                                                      SK_ARRAY_COUNT(colors3)))->unref();
+        paint.setShader(SkGradientShader::MakeSweep(25.f, 35.f, colors3, nullptr,
+                                                    SK_ARRAY_COUNT(colors3)));
         paint.setXfermodeMode(SkXfermode::kLighten_Mode);
-        canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f,
-                                         fBmp.width() + 10.f, fBmp.height() + 10.f), paint);
+        canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f, fBmp.width() + 10.f, fBmp.height() + 10.f),
+                        paint);
     }
 
     void onDraw(SkCanvas* canvas) override {