Format all tests.

tests/language_strong/async_star_take_reyield_test.dart

Index: tests/language_strong/async_star_take_reyield_test.dart
diff --git a/tests/language_strong/async_star_take_reyield_test.dart b/tests/language_strong/async_star_take_reyield_test.dart
index f2e8737e931bc71e3f6b192df35cb07d6ada11b2..eede02992542d82dc6e680ac12324d30d3fb31fe 100644
--- a/tests/language_strong/async_star_take_reyield_test.dart
+++ b/tests/language_strong/async_star_take_reyield_test.dart
@@ -19,8 +19,9 @@ Stream makeStream(int n) async* {
 main() {
   fivePartialSums(Stream s) async* {
     var r = 0;
-    await for(var v in s.take(5)) yield r += v;
+    await for (var v in s.take(5)) yield r += v;
   }
+
   asyncStart();
   expectList(fivePartialSums(makeStream(10)), [0, 1, 3, 6, 10])
       .then(asyncSuccess);