Format all tests.

tests/isolate/exit_at_spawnuri_test.dart

 // Copyright (c) 2015, 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.
 //
 // OtherScripts=exit_at_spawnuri_iso.dart
 
 library exit_at_spawn;
 
 import "dart:isolate";
 import "dart:async";
 import "package:async_helper/async_helper.dart";
 import "package:expect/expect.dart";
 
-main(){
+main() {
   asyncStart();
 
   RawReceivePort exitPort = new RawReceivePort();
   exitPort.handler = (message) {
     Expect.equals(null, message);
     exitPort.close();
     asyncEnd();
   };
-  
-  Isolate.spawnUri(Uri.parse("exit_at_spawnuri_iso.dart"), [],
-                   null,
-                   // Setup handler as part of spawn.
-                   errorsAreFatal: false,
-                   onExit: exitPort.sendPort);
+
+  Isolate.spawnUri(Uri.parse("exit_at_spawnuri_iso.dart"), [], null,
+      // Setup handler as part of spawn.
+      errorsAreFatal: false,
+      onExit: exitPort.sendPort);
 }