fixes #43, remove => workaround

test/codegen/expect/BenchmarkBase.js

Index: test/codegen/expect/BenchmarkBase.js
diff --git a/test/codegen/expect/BenchmarkBase.js b/test/codegen/expect/BenchmarkBase.js
index fca4ebc9a7bba4a31ffbf28b750585c256756e2d..8c1a9059235d92a3ab7c7fa560bd97833f69ddb5 100644
--- a/test/codegen/expect/BenchmarkBase.js
+++ b/test/codegen/expect/BenchmarkBase.js
@@ -58,12 +58,12 @@ var core = dart.import(core);
     }
     measure() {
       this.setup();
-      BenchmarkBase.measureFor(dart.fn((() => {
+      BenchmarkBase.measureFor(dart.fn(() => {
         this.warmup();
-      }).bind(this)), 100);
-      let result = BenchmarkBase.measureFor(dart.fn((() => {
+      }), 100);
+      let result = BenchmarkBase.measureFor(dart.fn(() => {
         this.exercise();
-      }).bind(this)), 2000);
+      }), 2000);
       this.teardown();
       return result;
     }