guard rasterizer and drawlooper setters

bench/RectoriBench.cpp

Index: bench/RectoriBench.cpp
diff --git a/bench/RectoriBench.cpp b/bench/RectoriBench.cpp
index 1f4da868b0cc10c2dae4c959c44d18c48e72d157..e2a44e383f6aa69e5b3b5a654e6fdd9d5d19e4fa 100644
--- a/bench/RectoriBench.cpp
+++ b/bench/RectoriBench.cpp
@@ -52,7 +52,7 @@ protected:
             SkScalar translate = 2.0f * size;
 
             SkPaint paint;
-            paint.setLooper(this->createLooper(-translate, blurSigma))->unref();
+            paint.setLooper(this->createLooper(-translate, blurSigma));
             paint.setColor(0xff000000 | Random.nextU());
             paint.setAntiAlias(true);
 
@@ -71,7 +71,7 @@ private:
         H = 480,
     };
 
-    SkLayerDrawLooper* createLooper(SkScalar xOff, SkScalar sigma) {
+    sk_sp<SkDrawLooper> createLooper(SkScalar xOff, SkScalar sigma) {
         SkLayerDrawLooper::Builder looperBuilder;
 
         //-----------------------------------------------
@@ -96,7 +96,7 @@ private:
         info.fOffset.set(0, 0);
 
         paint = looperBuilder.addLayer(info);
-        return looperBuilder.detachLooper();
+        return looperBuilder.detach();
     }
 
     typedef Benchmark INHERITED;