Format all tests.

tests/language_strong/function_subtype_typearg4_test.dart

Index: tests/language_strong/function_subtype_typearg4_test.dart
diff --git a/tests/language_strong/function_subtype_typearg4_test.dart b/tests/language_strong/function_subtype_typearg4_test.dart
index 6d95de58e2fcb160ca870e0081233870ea946ec6..1c5e786c03e4abf93ebef31116d878c94d275bda 100644
--- a/tests/language_strong/function_subtype_typearg4_test.dart
+++ b/tests/language_strong/function_subtype_typearg4_test.dart
@@ -10,6 +10,7 @@ import 'package:expect/expect.dart';
 class C<T> {}
 
 class I {}
+
 class J extends I {}
 
 typedef I f1();
@@ -17,4 +18,4 @@ typedef J f2();
 
 main() {
   Expect.isTrue(new C<f1>() is C<f2>);
-}
+}