Gamma-correctness pushed into Skia, top-down.

src/effects/SkBlurMaskFilter.cpp

Index: src/effects/SkBlurMaskFilter.cpp
diff --git a/src/effects/SkBlurMaskFilter.cpp b/src/effects/SkBlurMaskFilter.cpp
index bb6a8a5ae64452a843ab325f41359a4a307e6860..609e168f01b043f3154d739e3c56476c820e046c 100644
--- a/src/effects/SkBlurMaskFilter.cpp
+++ b/src/effects/SkBlurMaskFilter.cpp
@@ -1243,7 +1243,8 @@ bool SkBlurMaskFilterImpl::filterMaskGPU(GrTexture* src,
     // gaussianBlur.  Otherwise, we need to save it for later compositing.
     bool isNormalBlur = (kNormal_SkBlurStyle == fBlurStyle);
     *result = SkGpuBlurUtils::GaussianBlur(context, src, isNormalBlur && canOverwriteSrc,
-                                           clipRect, nullptr, xformedSigma, xformedSigma);
+                                           false, clipRect, nullptr,
+                                           xformedSigma, xformedSigma);
     if (nullptr == *result) {
         return false;
     }