Format all tests.

tests/lib/async/timer_cancel2_test.dart

Index: tests/lib/async/timer_cancel2_test.dart
diff --git a/tests/lib/async/timer_cancel2_test.dart b/tests/lib/async/timer_cancel2_test.dart
index 6e8edd34c1c8c234bc21e30da470bc4b57168426..ac1460dfc505a46a82ed8972e73e5fcca8fb1d98 100644
--- a/tests/lib/async/timer_cancel2_test.dart
+++ b/tests/lib/async/timer_cancel2_test.dart
@@ -16,7 +16,7 @@ main() {
       cancelTimer.cancel();
     }
 
-    cancelTimer = new Timer.periodic(const Duration(milliseconds: 1),
-                                     expectAsync(cancelHandler));
+    cancelTimer = new Timer.periodic(
+        const Duration(milliseconds: 1), expectAsync(cancelHandler));
   });
 }