guard rasterizer and drawlooper setters

gm/blurroundrect.cpp

 /*
 * Copyright 2013 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #include "gm.h"
 #include "SkBlurMask.h"
 #include "SkBlurMaskFilter.h"
@@ skipping 55 matching lines @@
             paint->setColorFilter(colorFilter)->unref();
             paint->setColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
         }
         {
             SkLayerDrawLooper::LayerInfo info;
             looperBuilder.addLayerOnTop(info);
         }
         SkPaint paint;
         canvas->drawRect(fRRect.rect(), paint);
 
-        paint.setLooper(looperBuilder.detachLooper())->unref();
+        paint.setLooper(looperBuilder.detach());
         paint.setColor(SK_ColorCYAN);
         paint.setAntiAlias(true);
 
         canvas->drawRRect(fRRect, paint);
     }
 
 private:
     SkString        fName;
     SkRRect         fRRect;
     int             fWidth, fHeight;
@@ skipping 89 matching lines @@
 // TODO(scroggo): Disabled in an attempt to rememdy
 // https://code.google.com/p/skia/issues/detail?id=1801 ('Win7 Test bots all failing GenerateGMs:
 // ran wrong number of tests')
 //DEF_GM(return new BlurRoundRectGM(600, 5514, 6);)
 
 // Rounded rect with two opposite corners with large radii, the other two
 // small.
 DEF_GM(return new BlurRoundRectGM(100, 100);)
 
 DEF_GM(return new SimpleBlurRoundRectGM();)