Format all tests.

tests/lib_strong/html/worker_test.dart

Index: tests/lib_strong/html/worker_test.dart
diff --git a/tests/lib_strong/html/worker_test.dart b/tests/lib_strong/html/worker_test.dart
index a43887b5e4de1b74c66e6c12570326dd5f31adc3..783fcf04c8609a797db0a6be82c95280c7d7809a 100644
--- a/tests/lib_strong/html/worker_test.dart
+++ b/tests/lib_strong/html/worker_test.dart
@@ -3,6 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 library worker_test;
+
 import 'package:unittest/unittest.dart';
 import 'package:unittest/html_individual_config.dart';
 import 'dart:html';
@@ -19,7 +20,6 @@ main() {
   var workerScript = '''postMessage('WorkerMessage');''';
 
   group('functional', () {
-
     test('unsupported', () {
       if (!Worker.supported) {
         expect(() => new Worker('worker.js'), throws);