Re-land "Format all multitests"

tests/language/constructor9_test.dart

 // Copyright (c) 2011, 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.
 
 // Check that all final instance fields of a class are initialized by
 // constructors.
 
-
 class Klass {
-  Klass(var v): field_ = v { }
+  Klass(var v) : field_ = v {}
   final uninitializedFinalField_; // //# 01: static type warning
   var field_;
 }
 
-
 main() {
   new Klass(5);
 }