dart2js: run dartfmt on tests

tests/compiler/dart2js/switch_empty_default_test.dart

 // Copyright (c) 2014, 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 constant folding on numbers.
 
 import 'dart:async';
 import 'package:async_helper/async_helper.dart';
 import 'compiler_helper.dart';
 
 const String SIMPLY_EMPTY = """
@@ skipping 103 matching lines @@
   print(a+b);
 }
 """;
 
 main() {
   var def = new RegExp(r"default:");
   var defOrCase3 = new RegExp(r"(default:|case 3):");
   var case3 = new RegExp(r"case 3:");
 
   asyncTest(() => Future.wait([
-    compileAndDoNotMatch(SIMPLY_EMPTY, 'main', def),
-    compileAndDoNotMatch(TOTAL, 'main', defOrCase3),
-    compileAndDoNotMatch(OPTIMIZED, 'main', def),
-    compileAndMatch(LABEL, 'main', case3),
-    compileAndMatch(DEFLABEL, 'main', def),
-    compileAndMatch(EMPTYDEFLABEL, 'main', def),
-  ]));
+        compileAndDoNotMatch(SIMPLY_EMPTY, 'main', def),
+        compileAndDoNotMatch(TOTAL, 'main', defOrCase3),
+        compileAndDoNotMatch(OPTIMIZED, 'main', def),
+        compileAndMatch(LABEL, 'main', case3),
+        compileAndMatch(DEFLABEL, 'main', def),
+        compileAndMatch(EMPTYDEFLABEL, 'main', def),
+      ]));
 }