Format all tests.

tests/lib_strong/html/window_mangling_test.dart

 // Copyright (c) 2012, 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 'dart:html' as dom;
 
 import 'package:expect/minitest.dart';
 
 // Defined in dom.Window.
 get navigator => "Dummy";
 
 $eq(x, y) => false;
 $eq$(x, y) => false;
 
 main() {
   var win = dom.window;
 
   test('windowMethod', () {
-      final message = navigator;
-      final x = win.navigator;
-      expect(x, notEquals(message));
-    });
+    final message = navigator;
+    final x = win.navigator;
+    expect(x, notEquals(message));
+  });
 
   test('windowEquals', () {
-      expect($eq(win, win), isFalse);
-      expect(win == win, isTrue);
-    });
+    expect($eq(win, win), isFalse);
+    expect(win == win, isTrue);
+  });
 
   test('windowEquals', () {
-      expect($eq$(win, win), isFalse);
-      expect(win == win, isTrue);
-    });
+    expect($eq$(win, win), isFalse);
+    expect(win == win, isTrue);
+  });
 }