Format all tests.

tests/language_strong/function_subtype_closure1_test.dart

Index: tests/language_strong/function_subtype_closure1_test.dart
diff --git a/tests/language_strong/function_subtype_closure1_test.dart b/tests/language_strong/function_subtype_closure1_test.dart
index 5c62341a1c8d20bde5f9f38dd918304e357b57dd..aeb31b393dd5afa1eb7db68258f2cbb1f53da42b 100644
--- a/tests/language_strong/function_subtype_closure1_test.dart
+++ b/tests/language_strong/function_subtype_closure1_test.dart
@@ -18,6 +18,7 @@ class C<T> {
 }
 
 class I<T> {}
+
 class J<T> extends I<int> {}
 
 main() {
@@ -32,4 +33,4 @@ main() {
   if (inCheckedMode) {
     Expect.throws(() => new C<bool>(new X().f1), (e) => true);
   }
-}
+}