Pull in test_reflective_loader 0.0.4 and switch analyzer to it.

pkg/analysis_server/lib/src/analysis_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.
 
 library analysis.server;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:core' hide Resource;
 import 'dart:io' as io;
@@ skipping 459 matching lines @@
    * operations execution.
    */
   void addOperation(ServerOperation operation) {
     operationQueue.add(operation);
   }
 
   /**
    * The socket from which requests are being read has been closed.
    */
   void done() {
-    index.stop();
+    index?.stop();
     running = false;
   }
 
   /**
    * There was an error related to the socket from which requests are being
    * read.
    */
   void error(argument) {
     running = false;
   }
@@ skipping 1305 matching lines @@
   /**
    * The [PerformanceTag] for time spent in server request handlers.
    */
   static PerformanceTag serverRequests = new PerformanceTag('serverRequests');
 
   /**
    * The [PerformanceTag] for time spent in split store microtasks.
    */
   static PerformanceTag splitStore = new PerformanceTag('splitStore');
 }