Add a bench for SkBicubicImageFilter.

Review URL: https://codereview.appspot.com/7312056

git-svn-id: http://skia.googlecode.com/svn/trunk@7668 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/bench.gypi b/gyp/bench.gypi
index 46dfad8..6372cf3 100644
--- a/gyp/bench.gypi
+++ b/gyp/bench.gypi
@@ -7,6 +7,7 @@
     '../bench/SkBenchmark.cpp',
 
     '../bench/AAClipBench.cpp',
+    '../bench/BicubicBench.cpp',
     '../bench/BitmapBench.cpp',
     '../bench/BitmapRectBench.cpp',
     '../bench/BlurBench.cpp',