Re-land "Format all multitests"

tests/language_strong/async_switch_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 "dart:async";
 import "package:expect/expect.dart";
 import "package:async_helper/async_helper.dart";
 
 foo1(a) async {
   int k = 0;
-  switch(a) {
+  switch (a) {
     case 1:
       await 3;
       k += 1;
       break;
     case 2:
       k += a;
-      return k+2;
+      return k + 2;
     default: k = 2; //# withDefault: ok
   }
   return k;
 }
 
 foo2(a) async {
   int k = 0;
-  switch(await a) {
+  switch (await a) {
     case 1:
       await 3;
       k += 1;
       break;
     case 2:
       k += await a;
-      return k+2;
+      return k + 2;
     default: k = 2; //# withDefault: ok
   }
   return k;
 }
 
 foo3(a) async {
   int k = 0;
-  switch(a) {
+  switch (a) {
     case 1:
       k += 1;
       break;
     case 2:
       k += a;
-      return k+2;
+      return k + 2;
     default: k = 2; //# withDefault: ok
   }
   return k;
 }
 
 foo4(value) async {
   int k = 0;
-  switch(await value) {
+  switch (await value) {
     case 1:
       k += 1;
       break;
     case 2:
       k += 2;
       return 2 + k;
     default: k = 2; //# withDefault: ok
   }
   return k;
 }
@@ skipping 15 matching lines @@
   Expect.equals(0, await foo3(3)); //# none: ok
   Expect.equals(1, await foo4(futureOf(1)));
   Expect.equals(4, await foo4(futureOf(2)));
   Expect.equals(2, await foo4(futureOf(3))); //# withDefault: ok
   Expect.equals(0, await foo4(futureOf(3))); //# none: ok
 }
 
 void main() {
   asyncStart();
   test().then((_) => asyncEnd());
-}
+}