guard rasterizer and drawlooper setters

gm/circles.cpp

Index: gm/circles.cpp
diff --git a/gm/circles.cpp b/gm/circles.cpp
index 4d3e33daee5aab875b025394984668ba33b923de..d9b25c0df364b6a6869bca67bdd89bce3b12cafb 100644
--- a/gm/circles.cpp
+++ b/gm/circles.cpp
@@ -76,15 +76,12 @@ protected:
         // AA with blur
         SkPaint p;
         p.setAntiAlias(true);
-        SkDrawLooper* shadowLooper =
-            SkBlurDrawLooper::Create(SK_ColorBLUE,
+        p.setLooper(SkBlurDrawLooper::Make(SK_ColorBLUE,
                                      SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(10)),
                                      SkIntToScalar(5), SkIntToScalar(10),
                                      SkBlurDrawLooper::kIgnoreTransform_BlurFlag |
                                      SkBlurDrawLooper::kOverrideColor_BlurFlag |
-                                     SkBlurDrawLooper::kHighQuality_BlurFlag);
-        SkAutoUnref aurL0(shadowLooper);
-        p.setLooper(shadowLooper);
+                                     SkBlurDrawLooper::kHighQuality_BlurFlag));
         fPaints.push_back(p);
         }