Re-land "Format all multitests"

tests/language/issue15606_test.dart

 // Copyright (c) 2013, 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 Foo<T> {}
 
 var a = [new Object(), 42];
 
 main() {
-  while (false) { // Comply to inlining heuristics.
+  while (false) {
+    // Comply to inlining heuristics.
     // Use an unresolved prefix.
     var foo = Unresolved.foo( //# 01: static type warning
-      // Make dart2js generate a call to setRuntimeTypeInfo.
+    // Make dart2js generate a call to setRuntimeTypeInfo.
       new Foo<int>(), //# 01: continued
-      // Use a one-shot interceptor.
+    // Use a one-shot interceptor.
       a[0].toString()); //# 01: continued
 
     // Do an is test on `Foo` to require setRuntimeTypeInfo.
     print(foo is Foo<int>); //# 01: continued
   }
 }