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

samplecode/SampleTextureDomain.cpp

Index: samplecode/SampleTextureDomain.cpp
===================================================================
--- samplecode/SampleTextureDomain.cpp	(revision 11004)
+++ samplecode/SampleTextureDomain.cpp	(working copy)
@@ -80,8 +80,8 @@
         srcRect.setXYWH(1, 1, 3, 3);
         dstRect.setXYWH(5.0f, 405.0f, 305.0f, 305.0f);
         SkMaskFilter* mf = SkBlurMaskFilter::Create(
-            5,
             SkBlurMaskFilter::kNormal_BlurStyle,
+            SkFloatToScalar(3.38675f),
             SkBlurMaskFilter::kHighQuality_BlurFlag |
             SkBlurMaskFilter::kIgnoreTransform_BlurFlag);
         paint.setMaskFilter(mf)->unref();
@@ -93,8 +93,8 @@
         // that handles blurs with rects transformed to non-
         // orthogonal rects. It also tests the NULL src rect handling
     mf = SkBlurMaskFilter::Create(
-            5,
             SkBlurMaskFilter::kNormal_BlurStyle,
+            SkFloatToScalar(3.38675f),
             SkBlurMaskFilter::kHighQuality_BlurFlag);
         paint.setMaskFilter(mf)->unref();