Format all tests.

tests/lib_strong/async/stack_trace09_test.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:expect/expect.dart';
 import 'package:async_helper/async_helper.dart';
 import 'dart:async';
 
 StackTrace captureStackTrace() {
   try {
     throw 0;
   } catch (e, st) {
     return st;
   }
 }
 
 main() {
   StackTrace trace = captureStackTrace();
   var controller;
   controller = new StreamController(onListen: () {
     controller.addError("error", trace);
     controller.close();
   });
   asyncStart();
-  controller.stream
-    .handleError((e, st) {
-      Expect.equals("error", e);
-      Expect.identical(trace, st);
-    })
-    .listen((x) { throw "should never be reached"; },
-            onDone: asyncEnd);
+  controller.stream.handleError((e, st) {
+    Expect.equals("error", e);
+    Expect.identical(trace, st);
+  }).listen((x) {
+    throw "should never be reached";
+  }, onDone: asyncEnd);
 }