remove SkFloatToScalar macro

bench/MatrixConvolutionBench.cpp

Index: bench/MatrixConvolutionBench.cpp
diff --git a/bench/MatrixConvolutionBench.cpp b/bench/MatrixConvolutionBench.cpp
index 0ef32fd3bedce8823e508d4089fbc9187080d4c8..5e3e201a209de841b480af65a5be93b7428ef12a 100644
--- a/bench/MatrixConvolutionBench.cpp
+++ b/bench/MatrixConvolutionBench.cpp
@@ -21,7 +21,7 @@ public:
             SkIntToScalar( 1), SkIntToScalar(-7), SkIntToScalar( 1),
             SkIntToScalar( 1), SkIntToScalar( 1), SkIntToScalar( 1),
         };
-        SkScalar gain = SkFloatToScalar(0.3f), bias = SkIntToScalar(100);
+        SkScalar gain = 0.3f, bias = SkIntToScalar(100);
         SkIPoint target = SkIPoint::Make(1, 1);
         fFilter = new SkMatrixConvolutionImageFilter(kernelSize, kernel, gain, bias, target, tileMode, convolveAlpha);
     }