Use generated classes to create requests in analysis server unit tests.

pkg/analysis_server/test/search/element_references_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.element_references;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/computer/element.dart';
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/protocol.dart';
+import 'package:analysis_server/src/protocol2.dart' show
+    SearchFindElementReferencesParams;
 import 'package:analysis_server/src/search/search_result.dart';
 import 'package:analysis_testing/reflective_tests.dart';
 import 'package:unittest/unittest.dart';
 
 import 'abstract_search_domain.dart';
 
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(ElementReferencesTest);
 }
 
 
 @ReflectiveTestCase()
 class ElementReferencesTest extends AbstractSearchDomainTest {
   Element searchElement;
 
   Future findElementReferences(String search, bool includePotential) {
     int offset = findOffset(search);
     return waitForTasksFinished().then((_) {
-      Request request = new Request('0', SEARCH_FIND_ELEMENT_REFERENCES);
-      request.setParameter(FILE, testFile);
-      request.setParameter(OFFSET, offset);
-      request.setParameter(INCLUDE_POTENTIAL, includePotential);
+      Request request = new SearchFindElementReferencesParams(testFile, offset,
+          includePotential).toRequest('0');
       Response response = handleSuccessfulRequest(request);
       searchId = response.getResult(ID);
       searchElement = response.getResult(ELEMENT);
       results.clear();
       return waitForSearchResults();
     });
   }
 
   test_constructor_named() {
     addTestFile('''
@@ skipping 531 matching lines @@
 }
 ''');
     return findElementReferences('T> {', false).then((_) {
       expect(searchElement.kind, ElementKind.TYPE_PARAMETER);
       expect(results, hasLength(2));
       assertHasResult(SearchResultKind.REFERENCE, 'T f;');
       assertHasResult(SearchResultKind.REFERENCE, 'T m()');
     });
   }
 }