Make sure SkDrawLooper objects can only be allocated on the heap.

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 "SampleCode.h"
 #include "SkBlurMask.h"
 #include "SkBlurDrawLooper.h"
@@ skipping 67 matching lines @@
         SkPaint paint;
         SkAutoTUnref<SkShader> shader(createChecker());
         paint.setShader(shader.get());
         canvas->drawPaint(paint);
     }
 
     virtual void onDrawContent(SkCanvas* canvas) SK_OVERRIDE {
         SkPaint paint;
         paint.setAntiAlias(true);
         paint.setTextSize(SkIntToScalar(24));
-        SkAutoTUnref<SkBlurDrawLooper> looper(SkNEW_ARGS(SkBlurDrawLooper,
-                                              (SK_ColorBLUE,
-                                               SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(2)),
-                                               0, 0)));
+        SkAutoTUnref<SkBlurDrawLooper> looper(
+            SkBlurDrawLooper::Create(SK_ColorBLUE,
+                                     SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(2)),
+                                     0, 0));
         paint.setLooper(looper);
         SkScalar height = paint.getFontMetrics(NULL);
         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 93 matching lines @@
 
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() {
     return new UnpremulView(skiagm::GM::GetResourcePath());
 }
 static SkViewRegister reg(MyFactory);