Some cleanups in the code that posts results to service clients.

runtime/vm/service/constants.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.
 
 part of vmservice;
 
 // These must be kept in sync with runtime/vm/service.cc.
 class Constants {
   static const int SERVICE_EXIT_MESSAGE_ID = 0;
   static const int ISOLATE_STARTUP_MESSAGE_ID = 1;
   static const int ISOLATE_SHUTDOWN_MESSAGE_ID = 2;
-
-  // Event family ids.
-  static const int EVENT_FAMILY_DEBUG = 0;
-  static const int EVENT_FAMILY_GC = 1;
-
-  // Event family masks.
-  static const int EVENT_FAMILY_DEBUG_MASK = (1 << EVENT_FAMILY_DEBUG);
-  static const int EVENT_FAMILY_DEBUG_GC = (1 << EVENT_FAMILY_GC);
 }