Push sigma-based blur interface into our GMs/benches/tests/samplecode

gm/bitmapmatrix.cpp

 
 /*
  * Copyright 2012 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 "SkBitmap.h"
 #include "SkBlurMaskFilter.h"
@@ skipping 65 matching lines @@
         canvas->drawBitmapMatrix(bm, matrix, &paint);
 
         {
             // test the following code path:
             // SkGpuDevice::drawPath() -> SkGpuDevice::drawWithMaskFilter()
             SkPaint paint;
 
             paint.setFilterBitmap(true);
 
             SkMaskFilter* mf = SkBlurMaskFilter::Create(
-                5,
                 SkBlurMaskFilter::kNormal_BlurStyle,
+                SkFloatToScalar(3.38675f),
                 SkBlurMaskFilter::kHighQuality_BlurFlag |
                 SkBlurMaskFilter::kIgnoreTransform_BlurFlag);
             paint.setMaskFilter(mf)->unref();
 
             canvas->translate(SkIntToScalar(bm.width()*2 + 20), 0);
 
             matrix.reset();
             matrix.setRotate(SkIntToScalar(45), SkIntToScalar(bm.width() / 2),
                              SkIntToScalar(bm.height() / 2));
 
@@ skipping 24 matching lines @@
         canvas.drawPath(path, paint);
     }
 };
 
 ////////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new DrawBitmapMatrixGM; }
 static GMRegistry reg(MyFactory);
 
 }