Make server use the common protocol classes

pkg/analysis_server/test/analysis/navigation_collector_test.dart

Index: pkg/analysis_server/test/analysis/navigation_collector_test.dart
diff --git a/pkg/analysis_server/test/analysis/navigation_collector_test.dart b/pkg/analysis_server/test/analysis/navigation_collector_test.dart
index e31348ffffab63b83b5b10f3c9290e96e035c718..61149cab8d8abc066ec09ba8272b388bfd044185 100644
--- a/pkg/analysis_server/test/analysis/navigation_collector_test.dart
+++ b/pkg/analysis_server/test/analysis/navigation_collector_test.dart
@@ -2,10 +2,8 @@
 // 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.analysis.navigation_collector;
-
-import 'package:analysis_server/protocol/protocol_generated.dart';
 import 'package:analysis_server/src/domains/analysis/navigation.dart';
+import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';