Make more use of generated code in analysis server.

pkg/analysis_server/test/search/top_level_declarations_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.top_level_declarations;
 
 import 'package:analysis_server/src/protocol.dart';
-import 'package:analysis_server/src/protocol2.dart' show
-    SearchFindTopLevelDeclarationsParams, ElementKind,
-    SearchFindTopLevelDeclarationsResult;
-import 'package:analysis_server/src/search/search_result.dart';
+import 'package:analysis_server/src/protocol2.dart';
 import 'package:analysis_testing/reflective_tests.dart';
 import 'package:unittest/unittest.dart';
 
 import 'abstract_search_domain.dart';
 import 'dart:async';
-import 'package:analysis_server/src/computer/element.dart';
 
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(TopLevelDeclarationsTest);
 }
 
 
 @ReflectiveTestCase()
 class TopLevelDeclarationsTest extends AbstractSearchDomainTest {
@@ skipping 45 matching lines @@
     return findTopLevelDeclarations('^[A-E]\$').then((_) {
       assertHasDeclaration(ElementKind.CLASS, 'A');
       assertHasDeclaration(ElementKind.CLASS, 'B');
       assertHasDeclaration(ElementKind.FUNCTION_TYPE_ALIAS, 'C');
       assertHasDeclaration(ElementKind.FUNCTION, 'D');
       assertHasDeclaration(ElementKind.TOP_LEVEL_VARIABLE, 'E');
       assertNoDeclaration(ElementKind.CLASS, 'ABC');
     });
   }
 }