Format all tests.

tests/language/type_propagation3_test.dart

 // Copyright (c) 2013, 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.
 
 // Regression test for dart2js that used to generate wrong code for
 // it. The bug happened in the SSA type propagation.
 
 class A {
   next() => new B();
   doIt() => null;
@@ skipping 28 matching lines @@
 
 main() {
   var a = new A();
   for (var i in [42]) {
     a = a.next();
   }
 
   // (1, 5)
 
   var b = a;
-  while (b.isEmpty) { // (4, 6)
+  while (b.isEmpty) {
+    // (4, 6)
     b.foo(); // (3, 7)
     b.bar(); // (8)
     b = b.doIt(); // (2)
   }
 
   if (!entered) throw 'Test failed';
 }