distinguish distinct matrixconvolution benchmarks

bench/MatrixConvolutionBench.cpp

Index: bench/MatrixConvolutionBench.cpp
diff --git a/bench/MatrixConvolutionBench.cpp b/bench/MatrixConvolutionBench.cpp
index da61891e732792f317ad7c687b381d9916ab5bf2..6e79643d64b4924ab8b65bc78d3e046491b87892 100644
--- a/bench/MatrixConvolutionBench.cpp
+++ b/bench/MatrixConvolutionBench.cpp
@@ -14,7 +14,7 @@
 class MatrixConvolutionBench : public Benchmark {
 public:
     MatrixConvolutionBench(SkMatrixConvolutionImageFilter::TileMode tileMode, bool convolveAlpha)
-        : fName("matrixconvolution") {
+        : fName(SkStringPrintf("matrixconvolution_%d_%d", (int)tileMode, (int)convolveAlpha)) {

[Stephen White, 2016/04/12 21:12:57]

I hate to be a pain, but could you turn the enum into a string, and
convolveAlpha into an optional suffix?

         SkISize kernelSize = SkISize::Make(3, 3);
         SkScalar kernel[9] = {
             SkIntToScalar( 1), SkIntToScalar( 1), SkIntToScalar( 1),
@@ -23,7 +23,7 @@ public:
         };
         SkScalar gain = 0.3f, bias = SkIntToScalar(100);
         SkIPoint kernelOffset = SkIPoint::Make(1, 1);
-        fFilter = SkMatrixConvolutionImageFilter::Make(kernelSize, kernel, gain, bias, 
+        fFilter = SkMatrixConvolutionImageFilter::Make(kernelSize, kernel, gain, bias,
                                                        kernelOffset, tileMode, convolveAlpha,
                                                        nullptr);
     }