Re-land "Format all multitests"

tests/language/bad_typedef_test.dart

 // Copyright (c) 2016, 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.
 // Dart test for a function type test that cannot be eliminated at compile time.
 
 import "package:expect/expect.dart";
 
-typedef int H(Function
+typedef int H(
+    Function
     Function //  //# 00: compile-time error
     x);
 
 main() {
   bool b = true;
   Expect.isFalse(b is H);
 }