add initial bench for dashing (more work to do)



git-svn-id: http://skia.googlecode.com/svn/trunk@3841 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/bench.gypi b/gyp/bench.gypi
index 1ff0946..47c4574 100644
--- a/gyp/bench.gypi
+++ b/gyp/bench.gypi
@@ -21,6 +21,7 @@
     '../bench/BitmapBench.cpp',
     '../bench/BlurBench.cpp',
     '../bench/ChromeBench.cpp',
+    '../bench/DashBench.cpp',
     '../bench/DecodeBench.cpp',
     '../bench/FontScalerBench.cpp',
     '../bench/GradientBench.cpp',