Make more use of generated classes in analysis server.

pkg/analysis_server/test/search/search_result_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.search.search_result;
 
 import 'package:analysis_server/src/computer/element.dart';
+import 'package:analysis_server/src/protocol2.dart' show ElementKind;
 import 'package:analysis_server/src/search/search_result.dart';
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analysis_testing/reflective_tests.dart';
 import 'package:unittest/unittest.dart';
 
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(SearchResultTest);
@@ skipping 87 matching lines @@
     expect(result.path[0].location.file, '/lib.dart');
     expect(result.path[0].location.offset, 10);
     // touch toJson();
     expect(result.toJson(), hasLength(4));
     // touch asJson();
     expect(SearchResult.asJson(result), hasLength(4));
     // touch toString();
     expect(result.toString(), hasLength(greaterThan(10)));
   }
 }