Re-land "Format all multitests"

tests/language_strong/const_constructor2_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.
 
 // Regression test for issue 14348.
 
 class A<T> {
   const A();
 }
 
@@ skipping 57 matching lines @@
   const C c14 = const C<double>.untyped(a); //# 16: static type warning, checked mode compile-time error
   const C c15 = const C<double>.subtyped(a); //# 17: static type warning, checked mode compile-time error
   const C c15m = const C<double>.redirecting(a); //# 18: static type warning
 
   const E e1 = const E.redirecting1(0); //# 19: ok
   const E e2 = const E.redirecting1(''); //# 20: checked mode compile-time error
   const E e3 = const E.redirecting2(0); //# 21: ok
   const E e4 = const E.redirecting2(''); //# 22: checked mode compile-time error
   const E e5 = const E.redirecting3(0); //# 23: ok
   const E e6 = const E.redirecting3(''); //# 24: checked mode compile-time error
-}
+}