Format all tests.

tests/language/function_subtype_optional2_test.dart

Index: tests/language/function_subtype_optional2_test.dart
diff --git a/tests/language/function_subtype_optional2_test.dart b/tests/language/function_subtype_optional2_test.dart
index 4ca61e8f8eb88b4871caa72150789022d99205d5..5e2ca86c29bbc53f21026d787b58ed71dc80b58b 100644
--- a/tests/language/function_subtype_optional2_test.dart
+++ b/tests/language/function_subtype_optional2_test.dart
@@ -57,4 +57,4 @@ main() {
   Expect.isTrue(new C<void___int_int>() is C<void___int>);
   // Test ([Object,int])->void <: ([int])->void.
   Expect.isTrue(new C<void___Object_int>() is C<void___int>);
-}
+}