Re-land "Format all multitests"

tests/language/parameter_metadata_test.dart

 // Copyright (c) 2014, 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.
 
 // Test that metadata annotations can be handled on nested parameters.
 
 test(
      @deprecated //   //# 01: ok
-     f(
+    f(
        @deprecated // //# 02: ok
-       a,
+        a,
        @deprecated // //# 03: ok
-       g(
+        g(
          @deprecated //# 04: ok
-         b))) {}
+            b))) {}
 
 main() {
   test(null);
-}
+}