Fix quickReject computation for blurs

src/effects/SkBlurMask.cpp

Index: src/effects/SkBlurMask.cpp
===================================================================
--- src/effects/SkBlurMask.cpp	(revision 9604)
+++ src/effects/SkBlurMask.cpp	(working copy)
@@ -12,14 +12,10 @@
 #include "SkTemplates.h"
 #include "SkEndian.h"
 
-// scale factor for the blur radius to match the behavior of the all existing blur
-// code (both on the CPU and the GPU).  This magic constant is  1/sqrt(3).
+const SkScalar SkBlurMask::kBLUR_SIGMA_SCALE = SkFloatToScalar(0.6f);
+const SkScalar SkBlurMask::kMAX_BLUR_RADIUS = SkIntToScalar(128);
+const SkScalar SkBlurMask::kBlurRadiusFudgeFactor = SkFloatToScalar(.57735f);
 
-// TODO: get rid of this fudge factor and move any required fudging up into
-// the calling library
-
-#define kBlurRadiusFudgeFactor SkFloatToScalar( .57735f )
-
 #define UNROLL_SEPARABLE_LOOPS
 
 /**