Remove quantization of device-space dest rect for Ganesh analytic rrect blurs

src/effects/SkBlurMaskFilter.cpp

Index: src/effects/SkBlurMaskFilter.cpp
diff --git a/src/effects/SkBlurMaskFilter.cpp b/src/effects/SkBlurMaskFilter.cpp
index c044333efb289fbd7efe8871998cc139b8ac60fa..cbaed9b66903a22ba7b0f906c47ddb3fc560a0c5 100644
--- a/src/effects/SkBlurMaskFilter.cpp
+++ b/src/effects/SkBlurMaskFilter.cpp
@@ -1034,8 +1034,8 @@ bool SkBlurMaskFilterImpl::directFilterMaskGPU(GrTextureProvider* texProvider,
 
     SkRect rect;
     if (path.isRect(&rect)) {
-        int pad = SkScalarCeilToInt(6*xformedSigma)/2;
-        rect.outset(SkIntToScalar(pad), SkIntToScalar(pad));
+        SkScalar pad = 3.0f * xformedSigma;
+        rect.outset(pad, pad);
 
         fp = GrRectBlurEffect::Make(texProvider, rect, xformedSigma);
     } else if (path.isOval(&rect) && SkScalarNearlyEqual(rect.width(), rect.height())) {