dart2js: run dartfmt on tests

tests/compiler/dart2js_extra/deferred_fail_and_retry_worker_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.
 
 // Test that when a deferred import from a worker fails to load, it is possible
 // to retry.
 
 import "deferred_fail_and_retry_lib.dart" deferred as lib;
 import "package:expect/expect.dart";
 import "package:async_helper/async_helper.dart";
 import "dart:isolate";
 import "dart:js" as js;
 
 void test(SendPort sendPort) {
   // Patch XMLHttpRequest to fail on first load.
-  js.context.callMethod("eval", ["""
+  js.context.callMethod("eval", [
+    """
     oldXMLHttpRequest = XMLHttpRequest;
     XMLHttpRequest = function() {
       XMLHttpRequest = oldXMLHttpRequest;
       var instance = new XMLHttpRequest();
       this.addEventListener = function(x, y, z) {
         instance.addEventListener(x, y, z);
       }
       this.send = function() {
         instance.send();
       }
       this.open = function(x, uri) {
         instance.open(x, "non_existing.js");
       }
     }
-  """]);
+  """
+  ]);
   lib.loadLibrary().then((_) {
     sendPort.send("Library should not have loaded");
   }, onError: (error) {
     sendPort.send("failed");
     lib.loadLibrary().then((_) {
       sendPort.send(lib.foo());
     }, onError: (error) {
       sendPort.send("Library should have loaded this time $error");
     });
   });
 }
 
-
 main() {
   ReceivePort receivePort = new ReceivePort();
   asyncStart();
   bool receivedFailed = false;
   receivePort.listen((message) {
     if (!receivedFailed) {
       Expect.equals("failed", message);
       receivedFailed = true;
     } else {
       Expect.equals("loaded", message);
       asyncEnd();
     }
   });
   Isolate.spawn(test, receivePort.sendPort);
 }