guard rasterizer and drawlooper setters

samplecode/SampleUnpremul.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 "sk_tool_utils.h"
@@ skipping 62 matching lines @@
     }
 
     void onDrawBackground(SkCanvas* canvas) override {
         sk_tool_utils::draw_checkerboard(canvas, 0xFFCCCCCC, 0xFFFFFFFF, 12);
     }
 
     void onDrawContent(SkCanvas* canvas) override {
         SkPaint paint;
         paint.setAntiAlias(true);
         paint.setTextSize(SkIntToScalar(24));
-        SkAutoTUnref<SkDrawLooper> looper(
-            SkBlurDrawLooper::Create(SK_ColorBLUE,
-                                     SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(2)),
-                                     0, 0));
+        auto looper(
+            SkBlurDrawLooper::Make(SK_ColorBLUE, SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(2)),
+                                   0, 0));
         paint.setLooper(looper);
         SkScalar height = paint.getFontMetrics(nullptr);
         if (!fDecodeSucceeded) {
             SkString failure;
             if (fResPath.size() == 0) {
                 failure.printf("resource path is required!");
             } else {
                 failure.printf("Failed to decode %s", fCurrFile.c_str());
             }
             canvas->drawText(failure.c_str(), failure.size(), 0, height, paint);
@@ skipping 78 matching lines @@
 
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() {
     return new UnpremulView(GetResourcePath());
 }
 static SkViewRegister reg(MyFactory);