Revert "Remove unused option in server API"

pkg/analysis_server/test/domain_execution_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.
 
 library test.domain.execution;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/analysis_server.dart';
@@ skipping 27 matching lines @@
     AnalysisServer server;
     ExecutionDomainHandler handler;
 
     setUp(() {
       ExtensionManager manager = new ExtensionManager();
       ServerPlugin serverPlugin = new ServerPlugin();
       manager.processPlugins([serverPlugin]);
       server = new AnalysisServer(
           new MockServerChannel(),
           provider,
+          new MockPackageMapProvider(),
           null,
           serverPlugin,
           new AnalysisServerOptions(),
           new DartSdkManager('', false, (_) => new MockSdk()),
           InstrumentationService.NULL_SERVICE);
       handler = new ExecutionDomainHandler(server);
     });
 
     group('createContext/deleteContext', () {
       test('create/delete multiple contexts', () {
@@ skipping 290 matching lines @@
  * A [Source] that knows it's [fullName].
  */
 class TestSource implements Source {
   String fullName;
 
   TestSource(this.fullName);
 
   @override
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }