Format all tests.

tests/language_strong/await_for_test.dart

Index: tests/language_strong/await_for_test.dart
diff --git a/tests/language_strong/await_for_test.dart b/tests/language_strong/await_for_test.dart
index 2de1a9fed39d8658ec6b7b2aca461066afe1ff8a..a655d5f9548eba16b466512b40e5af2a481b2951 100644
--- a/tests/language_strong/await_for_test.dart
+++ b/tests/language_strong/await_for_test.dart
@@ -11,10 +11,10 @@ class Trace {
   record(x) {
     trace += x.toString();
   }
+
   toString() => trace;
 }
 
-
 Stream makeMeAStream() {
   return timedCounter(5);
 }
@@ -72,10 +72,10 @@ main() {
 
   var f2 = consumeTwo();
   t2.record("T2:");
- 
+
   var f3 = consumeNested();
   t3.record("T3:");
- 
+
   var f4 = consumeSomeOfInfinite();
   t4.record("T4:");