Tweak for the type of the 'instances' variable.

pkg/analysis_server/lib/src/status/get_handler.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.src.status.get_handler;
 
 import 'dart:collection';
 import 'dart:convert';
 import 'dart:io';
 import 'dart:math';
@@ skipping 1641 matching lines @@
     });
   }
 
   void _returnMemoryUsage(HttpRequest request) {
     _writeResponse(request, (StringBuffer buffer) {
       _writePage(buffer, 'Analysis Server - Memory Use', [],
           (StringBuffer buffer) {
         AnalysisServer server = _server.analysisServer;
         MemoryUseData data = new MemoryUseData();
         data.processAnalysisServer(server);
-        Map<Type, HashSet> instances = data.instances;
+        Map<Type, Set> instances = data.instances;
         List<Type> types = instances.keys.toList();
         types.sort((Type left, Type right) =>
             left.toString().compareTo(right.toString()));
 
         buffer.write('<h3>Instance Counts (reachable from contexts)</h3>');
         buffer.write('<table>');
         _writeRow(buffer, ['Count', 'Class name'], header: true);
         types.forEach((Type type) {
           _writeRow(buffer, [instances[type].length, type],
               classes: ['right', null]);
@@ skipping 1036 matching lines @@
    */
   static String makeLink(
       String path, Map<String, String> params, String innerHtml,
       [bool hasError = false]) {
     Uri uri = new Uri(path: path, queryParameters: params);
     String href = HTML_ESCAPE.convert(uri.toString());
     String classAttribute = hasError ? ' class="error"' : '';
     return '<a href="$href"$classAttribute>$innerHtml</a>';
   }
 }