Revert "Revert "Don't use GrRRectBlurEffect for large rects when highp is not full float""

This reverts commit 729715298c8af1d2ecc4cbe887eeeb9a1c17c595.

Changed std::abs() to SkScalarAbs() and #include "SkScalar.h"

Change-Id: I9a02ca1a63eef748f9a11d324e8bb89e14571bc9
Reviewed-on: https://skia-review.googlesource.com/127320
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/effects/GrRectBlurEffect.cpp b/src/gpu/effects/GrRectBlurEffect.cpp
index f537361..219fefa 100644
--- a/src/gpu/effects/GrRectBlurEffect.cpp
+++ b/src/gpu/effects/GrRectBlurEffect.cpp
@@ -160,6 +160,7 @@
     float sigma = data->fRandom->nextRangeF(3, 8);
     float width = data->fRandom->nextRangeF(200, 300);
     float height = data->fRandom->nextRangeF(200, 300);
-    return GrRectBlurEffect::Make(data->proxyProvider(), SkRect::MakeWH(width, height), sigma);
+    return GrRectBlurEffect::Make(data->proxyProvider(), *data->caps()->shaderCaps(),
+                                  SkRect::MakeWH(width, height), sigma);
 }
 #endif