Have GPU based approach workingish.

Benchmarks do not work and it is always on.

git-svn-id: http://skia.googlecode.com/svn/trunk@5175 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tools/bench_pictures_main.cpp b/tools/bench_pictures_main.cpp
index ae9e850..0521005 100644
--- a/tools/bench_pictures_main.cpp
+++ b/tools/bench_pictures_main.cpp
@@ -187,6 +187,7 @@
     }
 
     benchmark->setRepeats(repeats);
+    benchmark->setUseGpuDevice();
 }
 
 static void process_input(const SkString& input, sk_tools::PictureBenchmark& benchmark) {