Format all tests.

tests/lib/async/run_zoned4_test.dart

Index: tests/lib/async/run_zoned4_test.dart
diff --git a/tests/lib/async/run_zoned4_test.dart b/tests/lib/async/run_zoned4_test.dart
index a5336b25ca4762c5b691c53e122dd5e501265912..9df955e201ac1ef5f5a5367f922ff5d9b3c2d261 100644
--- a/tests/lib/async/run_zoned4_test.dart
+++ b/tests/lib/async/run_zoned4_test.dart
@@ -8,7 +8,9 @@ import 'dart:async';
 main() {
   // Make sure `runZoned` returns the result of a synchronous call when an
   // error handler is defined.
-  Expect.equals(499,
-                runZoned(() => 499,
-                         onError: (e) { throw "Unexpected"; }));
+  Expect.equals(
+      499,
+      runZoned(() => 499, onError: (e) {
+        throw "Unexpected";
+      }));
 }