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

src/animator/SkDrawBlur.cpp

Index: src/animator/SkDrawBlur.cpp
===================================================================
--- src/animator/SkDrawBlur.cpp	(revision 11108)
+++ src/animator/SkDrawBlur.cpp	(working copy)
@@ -12,20 +12,21 @@
 #if SK_USE_CONDENSED_INFO == 0
 
 const SkMemberInfo SkDrawBlur::fInfo[] = {
-    SK_MEMBER(blurStyle, MaskFilterBlurStyle),
-    SK_MEMBER(radius, Float)
+    SK_MEMBER(fBlurStyle, MaskFilterBlurStyle),
+    SK_MEMBER(fSigma, Float)
 };
 
 #endif
 
 DEFINE_GET_MEMBER(SkDrawBlur);
 
-SkDrawBlur::SkDrawBlur() : radius(-1),
-    blurStyle(SkBlurMaskFilter::kNormal_BlurStyle) {
+SkDrawBlur::SkDrawBlur() 
+    : fSigma(-1)
+    , fBlurStyle(SkBlurMaskFilter::kNormal_BlurStyle) {
 }
 
 SkMaskFilter* SkDrawBlur::getMaskFilter() {
-    if (radius < 0)
+    if (fSigma < 0)
         return NULL;
-    return SkBlurMaskFilter::Create(radius, (SkBlurMaskFilter::BlurStyle) blurStyle);
+    return SkBlurMaskFilter::Create((SkBlurMaskFilter::BlurStyle) fBlurStyle, fSigma);
 }