Make server use the common protocol classes

pkg/analysis_server/test/integration/analysis/navigation_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 'package:analysis_server/protocol/protocol_generated.dart';
+import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../support/integration_tests.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(AnalysisNavigationTest);
   });
 }
@@ skipping 110 matching lines @@
         'localVariable.field', 'localVariable =', ElementKind.LOCAL_VARIABLE);
     checkLocal('method();', 'method() {', ElementKind.METHOD);
     checkLocal('parameter());', 'parameter) {', ElementKind.PARAMETER);
     checkLocal('field = 1', 'field;', ElementKind.SETTER);
     checkLocal('topLevelVariable;', 'topLevelVariable;',
         ElementKind.TOP_LEVEL_VARIABLE);
     checkLocal(
         'TypeParameter field;', 'TypeParameter>', ElementKind.TYPE_PARAMETER);
   }
 }