guard rasterizer and drawlooper setters

samplecode/ClockFaceView.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SampleCode.h"
 #include "SkView.h"
 #include "SkCanvas.h"
@@ skipping 145 matching lines @@
 
 #include "SkXfermode.h"
 
 static void apply_shader(SkPaint* paint, float scale)
 {
     SkPaint p;
     SkLayerRasterizer::Builder rastBuilder;
 
     p.setAntiAlias(true);
     r7(&rastBuilder, p, scale);
-    paint->setRasterizer(rastBuilder.detachRasterizer())->unref();
+    paint->setRasterizer(rastBuilder.detach());
 
     paint->setColor(SK_ColorBLUE);
 }
 
 class ClockFaceView : public SkView {
     SkTypeface* fFace;
     SkScalar fInterp;
     SkScalar fDx;
 
 public:
@@ skipping 73 matching lines @@
     }
 
 private:
     typedef SkView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new ClockFaceView; }
 static SkViewRegister reg(MyFactory);