Add link to performance data

pkg/analysis_server/lib/src/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.get_handler;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:convert';
 import 'dart:io';
@@ skipping 1396 matching lines @@
       buffer.write('Instrumentation: ');
       if (AnalysisEngine.instance.instrumentationService.isActive) {
         buffer.write('<span style="color:red">Active</span>');
       } else {
         buffer.write('Inactive');
       }
       buffer.write('<br>');
       buffer.write('Version: ');
       buffer.write(AnalysisServer.VERSION);
       buffer.write('</p>');
+
+      buffer.write('<p><b>Performance Data</b></p>');
+      buffer.write('<p>');
+      buffer.write(
+          _makeLink(PERFORMANCE_PATH, {}, 'Communication performance'));
+      buffer.write('</p>');
     }, (StringBuffer buffer) {
       _writeSubscriptionList(buffer, ServerService.VALUES, services);
     });
     return true;
   }
 
   /**
    * Write a representation of the given [stackTrace] to the given [buffer].
    */
   void _writeStackTrace(StringBuffer buffer, StackTrace stackTrace) {
@@ skipping 119 matching lines @@
     } else if (value is Element) {
       String link =
           _makeLink(ELEMENT_PATH, linkParameters, value.runtimeType.toString());
       buffer.write('<i>$link</i>');
     } else {
       buffer.write(HTML_ESCAPE.convert(value.toString()));
       buffer.write(' <i>(${value.runtimeType.toString()})</i>');
     }
   }
 }