Run formatter on a few frontend and kernel files that hadn't been formatted.

pkg/front_end/testcases/redirecting_constructor.dart

 // Copyright (c) 2017, 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.
 
 class A {
   A();
   factory A.fisk() = B;
 }
 
-class B extends A {
-}
+class B extends A {}
 
 main() {
   new A.fisk();
 }