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

runtime/observatory/lib/service_common.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.
 
 library service_common;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:typed_data';
 
@@ skipping 168 matching lines @@
       postServiceEvent(meta, data);
     });
   }
 
   void _onStringMessage(String data) {
     var map = JSON.decode(data);
     if (map == null) {
       Logger.root.severe('WebSocketVM got empty message');
       return;
     }
-    // Extract serial and response.
+    // Extract serial and result.
     var serial;
-    var response;
+    var result;
     serial = map['id'];
-    response = map['response'];
+    result = map['result'];
     if (serial == null) {
       // Messages without serial numbers are asynchronous events
       // from the vm.
-      postServiceEvent(response, null);
+      postServiceEvent(result, null);
       return;
     }
     // Complete request.
     var request = _pendingRequests.remove(serial);
     if (request == null) {
       Logger.root.severe('Received unexpected message: ${map}');
       return;
     }
     if (request.method != 'getTagProfile' &&
         request.method != 'getIsolateMetric' &&
         request.method != 'getVMMetric') {
       Logger.root.info(
           'RESPONSE [${serial}] ${request.method}');
     }
-    request.completer.complete(response);
+    request.completer.complete(result);
   }
 
   // WebSocket message event handler.
   void _onMessage(dynamic data) {
     if (data is! String) {
       _onBinaryMessage(data);
     } else {
       _onStringMessage(data);
     }
   }
@@ skipping 65 matching lines @@
     if (request.method != 'getTagProfile' &&
         request.method != 'getIsolateMetric' &&
         request.method != 'getVMMetric') {
       Logger.root.info(
           'GET [${serial}] ${request.method} from ${target.networkAddress}');
     }
     // Send message.
     _webSocket.send(message);
   }
 }