update blendmode bench

Bug: skia:
Change-Id: Id47fedd9e346035af0f14b9a9c171c79eec0d9cd
Reviewed-on: https://skia-review.googlesource.com/21407
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/bench/XfermodeBench.cpp b/bench/BlendmodeBench.cpp
similarity index 97%
rename from bench/XfermodeBench.cpp
rename to bench/BlendmodeBench.cpp
index b12e458..d38807a 100644
--- a/bench/XfermodeBench.cpp
+++ b/bench/BlendmodeBench.cpp
@@ -17,7 +17,7 @@
 public:
     XfermodeBench(SkBlendMode mode, bool aa) : fBlendMode(mode) {
         fAA = aa;
-        fName.printf("Xfermode_%s%s", SkBlendMode_Name(mode), aa ? "_aa" : "");
+        fName.printf("blendmode_%s_%s", aa ? "mask" : "rect", SkBlendMode_Name(mode));
     }
 
 protected:
diff --git a/gn/bench.gni b/gn/bench.gni
index aabb5be..a916fd7 100644
--- a/gn/bench.gni
+++ b/gn/bench.gni
@@ -18,6 +18,7 @@
   "$_bench/BitmapRectBench.cpp",
   "$_bench/BitmapRegionDecoderBench.cpp",
   "$_bench/BitmapScaleBench.cpp",
+  "$_bench/BlendmodeBench.cpp",
   "$_bench/BlurBench.cpp",
   "$_bench/BlurImageFilterBench.cpp",
   "$_bench/BlurOccludedRRectBench.cpp",
@@ -125,5 +126,4 @@
   "$_bench/VertBench.cpp",
   "$_bench/WritePixelsBench.cpp",
   "$_bench/WriterBench.cpp",
-  "$_bench/XfermodeBench.cpp",
 ]