Add support for built-in plugins

pkg/analysis_server/test/edit/assists_test.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_generated.dart';
 import 'package:analysis_server/src/edit/edit_domain.dart';
 import 'package:analysis_server/src/plugin/plugin_manager.dart';
@@ skipping 33 matching lines @@
   void setUp() {
     enableNewAnalysisDriver = true;
     super.setUp();
     createProject();
     ExtensionManager manager = new ExtensionManager();
     manager.processPlugins([server.serverPlugin]);
     handler = new EditDomainHandler(server);
   }
 
   test_fromPlugins() async {
-    PluginInfo info = new PluginInfo('a', 'b', 'c', null, null);
+    PluginInfo info = new DiscoveredPluginInfo('a', 'b', 'c', null, null);
     String message = 'From a plugin';
     plugin.PrioritizedSourceChange change = new plugin.PrioritizedSourceChange(
         5,
         new plugin.SourceChange(message, edits: <plugin.SourceFileEdit>[
           new plugin.SourceFileEdit('', 0,
               edits: <plugin.SourceEdit>[new plugin.SourceEdit(0, 0, 'x')])
         ]));
     plugin.EditGetAssistsResult result = new plugin.EditGetAssistsResult(
         <plugin.PrioritizedSourceChange>[change]);
     pluginManager.broadcastResults = <PluginInfo, Future<plugin.Response>>{
@@ skipping 69 matching lines @@
       if (change.message == message) {
         String resultCode =
             SourceEdit.applySequence(testCode, change.edits[0].edits);
         expect(resultCode, expectedCode);
         return;
       }
     }
     fail("Expected to find |$message| in\n" + changes.join('\n'));
   }
 }