Add engine plugin

pkg/analysis_server/lib/src/server/driver.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 driver;
 
 import 'dart:async';
 import 'dart:io';
 import 'dart:math';
 
@@ skipping 244 matching lines @@
     InstrumentationService service =
         new InstrumentationService(instrumentationServer);
     service.logVersion(_readUuid(service), results[CLIENT_ID],
         results[CLIENT_VERSION], AnalysisServer.VERSION, defaultSdk.sdkVersion);
     AnalysisEngine.instance.instrumentationService = service;
     //
     // Process all of the plugins so that extensions are registered.
     //
     ServerPlugin serverPlugin = new ServerPlugin();
     List<Plugin> plugins = <Plugin>[];
+    plugins.add(AnalysisEngine.instance.enginePlugin);
     plugins.add(serverPlugin);
     plugins.addAll(_userDefinedPlugins);
     ExtensionManager manager = new ExtensionManager();
     manager.processPlugins(plugins);
 
     socketServer = new SocketServer(
         analysisServerOptions, defaultSdk, service, serverPlugin);
     httpServer = new HttpAnalysisServer(socketServer);
     stdioServer = new StdioAnalysisServer(socketServer);
 
@@ skipping 135 matching lines @@
       uuidFile.parent.createSync(recursive: true);
       uuidFile.writeAsStringSync(uuid);
     } catch (exception, stackTrace) {
       service.logPriorityException(exception, stackTrace);
       // Slightly alter the uuid to indicate it was not persisted
       uuid = 'temp-$uuid';
     }
     return uuid;
   }
 }