Add analytics to analyzer-cli and analysis server.

pkg/analysis_server/lib/src/domain_server.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.
 
+import 'dart:async';
+
 import 'package:analysis_server/protocol/protocol.dart';
 import 'package:analysis_server/protocol/protocol_constants.dart';
 import 'package:analysis_server/protocol/protocol_generated.dart';
 import 'package:analysis_server/src/analysis_server.dart';
 
 /**
  * Instances of the class [ServerDomainHandler] implement a [RequestHandler]
  * that handles requests in the server domain.
  */
 class ServerDomainHandler implements RequestHandler {
@@ skipping 17 matching lines @@
 
   @override
   Response handleRequest(Request request) {
     try {
       String requestName = request.method;
       if (requestName == SERVER_REQUEST_GET_VERSION) {
         return getVersion(request);
       } else if (requestName == SERVER_REQUEST_SET_SUBSCRIPTIONS) {
         return setSubscriptions(request);
       } else if (requestName == SERVER_REQUEST_SHUTDOWN) {
-        return shutdown(request);
+        shutdown(request);
+        return Response.DELAYED_RESPONSE;
       }
     } on RequestFailure catch (exception) {
       return exception.response;
     }
     return null;
   }
 
   /**
    * Subscribe for services.
    *
    * All previous subscriptions are replaced by the given set of subscriptions.
    */
   Response setSubscriptions(Request request) {
     server.serverServices =
         new ServerSetSubscriptionsParams.fromRequest(request)
             .subscriptions
             .toSet();
     return new ServerSetSubscriptionsResult().toResponse(request.id);
   }
 
   /**
    * Cleanly shutdown the analysis server.
    */
-  Response shutdown(Request request) {
-    server.shutdown();
+  Future<Null> shutdown(Request request) async {
+    await server.shutdown();
     Response response = new ServerShutdownResult().toResponse(request.id);
-    return response;
+    server.sendResponse(response);
   }
 }