Format all tests.

tests/lib_strong/async/stack_trace08_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() {
   Completer completer = new Completer();
   StackTrace trace = captureStackTrace();
   asyncStart();
-  completer.future
-    .whenComplete(() => 499)
-    .then((_) { throw "should never be reached"; })
-    .catchError((e, st) {
-      Expect.equals("c-error", e);
-      Expect.identical(trace, st);
-      // Test the rethrowing the same error keeps the stack trace.
-      throw e;
-    })
-    .catchError((e, st) {
-      Expect.equals("c-error", e);
-      Expect.identical(trace, st);
-      asyncEnd();
-    });
+  completer.future.whenComplete(() => 499).then((_) {
+    throw "should never be reached";
+  }).catchError((e, st) {
+    Expect.equals("c-error", e);
+    Expect.identical(trace, st);
+    // Test the rethrowing the same error keeps the stack trace.
+    throw e;
+  }).catchError((e, st) {
+    Expect.equals("c-error", e);
+    Expect.identical(trace, st);
+    asyncEnd();
+  });
   completer.completeError("c-error", trace);
 }