Re-land "Format all multitests"

tests/language_strong/multiline_newline_test.dart

 // Copyright (c) 2015, 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 'package:expect/expect.dart';
 import 'multiline_newline_cr.dart' as cr;
 import 'multiline_newline_crlf.dart' as crlf;
 import 'multiline_newline_lf.dart' as lf;
 
 main() {
@@ skipping 36 matching lines @@
       crlf.constantMultilineString != lf.constantMultilineString ? true : null;
   const c9 =
       lf.constantMultilineString != cr.constantMultilineString ? true : null;
   Expect.isNull(c7);
   Expect.isNull(c8);
   Expect.isNull(c9);
 
   const c10 = c7 ? 1 : 2; // //# 04: compile-time error
   const c11 = c8 ? 2 : 3; // //# 05: compile-time error
   const c12 = c9 ? 3 : 4; // //# 06: compile-time error
-}
+}