Format all tests.

tests/lib_strong/async/timer_not_available_test.dart

Index: tests/lib_strong/async/timer_not_available_test.dart
diff --git a/tests/lib_strong/async/timer_not_available_test.dart b/tests/lib_strong/async/timer_not_available_test.dart
index 0e5510754335f624d6b8be3861a64f475cc18b9b..fcbcc1307af93091951a55a6b204debba6b73d57 100644
--- a/tests/lib_strong/async/timer_not_available_test.dart
+++ b/tests/lib_strong/async/timer_not_available_test.dart
@@ -11,14 +11,14 @@ main() {
   final ms = const Duration(milliseconds: 1);
   bool failed = false;
   try {
-    new Timer(ms * 5, () { });
+    new Timer(ms * 5, () {});
   } on UnsupportedError catch (e) {
     failed = true;
   }
   Expect.isTrue(failed);
   failed = false;
   try {
-    var t = new Timer.periodic(ms * 10, (_) { });
+    var t = new Timer.periodic(ms * 10, (_) {});
     t.cancel();
   } on UnsupportedError catch (e) {
     failed = true;