Unify the server and plugin versions of the generators

pkg/analysis_server/test/integration/search/get_type_hierarchy_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 'dart:async';
 
-import 'package:analysis_server/plugin/protocol/protocol.dart';
+import 'package:analysis_server/protocol/protocol_generated.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../integration_tests.dart';
+import '../support/integration_tests.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(GetTypeHierarchyTest);
   });
 }
 
 @reflectiveTest
 class GetTypeHierarchyTest extends AbstractAnalysisServerIntegrationTest {
   /**
@@ skipping 243 matching lines @@
    */
   TypeHierarchyItem getItem(String name) {
     if (nameToIndex.containsKey(name)) {
       return items[nameToIndex[name]];
     } else {
       fail('Class $name not found in hierarchy results');
       return null;
     }
   }
 }