Format all tests.

tests/language_strong/deferred_no_such_method_lib.dart

Index: tests/language_strong/deferred_no_such_method_lib.dart
diff --git a/tests/language_strong/deferred_no_such_method_lib.dart b/tests/language_strong/deferred_no_such_method_lib.dart
index 05137cabc468febc6a3ff71ae303077c6d2e38cc..ccb00911cc4ef21430088f52c4332fb76bf17a3a 100644
--- a/tests/language_strong/deferred_no_such_method_lib.dart
+++ b/tests/language_strong/deferred_no_such_method_lib.dart
@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-@proxy class C {
+@proxy
+class C {
   noSuchMethod(Invocation invocation) => 42;
-}
+}