Make server use the common protocol classes

pkg/analysis_server/lib/src/services/completion/dart/keyword_contributor.dart

Index: pkg/analysis_server/lib/src/services/completion/dart/keyword_contributor.dart
diff --git a/pkg/analysis_server/lib/src/services/completion/dart/keyword_contributor.dart b/pkg/analysis_server/lib/src/services/completion/dart/keyword_contributor.dart
index 6f2b8523774ead7d0a43444adad16726963f06c2..5703c326f45c9d86cf547f8541dfd9618742699c 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart/keyword_contributor.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart/keyword_contributor.dart
@@ -1,13 +1,9 @@
 // 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 services.completion.dart.keyword;
-
 import 'dart:async';
 
-import 'package:analysis_server/protocol/protocol_generated.dart';
 import 'package:analysis_server/src/provisional/completion/dart/completion_dart.dart';
 import 'package:analysis_server/src/services/completion/dart/completion_manager.dart';
 import 'package:analysis_server/src/services/completion/dart/optype.dart';
@@ -15,6 +11,7 @@ import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/src/dart/ast/token.dart';
+import 'package:analyzer_plugin/protocol/protocol_common.dart';
 
 const ASYNC_STAR = 'async*';
 const DEFERRED_AS = 'deferred as';