remove SkFloatToScalar macro

BUG=
R=reed@google.com, djsollen@google.com

Author: caryclark@google.com

Review URL: https://codereview.chromium.org/85463005

git-svn-id: http://skia.googlecode.com/svn/trunk@12385 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/MatrixConvolutionBench.cpp b/bench/MatrixConvolutionBench.cpp
index 0ef32fd..5e3e201 100644
--- a/bench/MatrixConvolutionBench.cpp
+++ b/bench/MatrixConvolutionBench.cpp
@@ -21,7 +21,7 @@
             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);
     }