Change integration test send...() methods to use structured objects.

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.
 
 library test.integration.analysis.navigation;
 
-import '../../reflective_tests.dart';
+import 'package:analysis_server/src/protocol.dart';
 import 'package:unittest/unittest.dart';
 
+import '../../reflective_tests.dart';
 import '../integration_tests.dart';
 
 @ReflectiveTestCase()
 class AnalysisNavigationTest extends AbstractAnalysisServerIntegrationTest {
   test_navigation() {
     String pathname1 = sourcePath('test1.dart');
     String text1 =
         r'''
 library foo;
 
@@ skipping 24 matching lines @@
 }
 ''';
     writeFile(pathname1, text1);
     String pathname2 = sourcePath('test2.dart');
     String text2 =
         r'''
 part of foo;
 ''';
     writeFile(pathname2, text2);
     standardAnalysisSetup();
-    sendAnalysisSetSubscriptions({'NAVIGATION': [pathname1]});
+    sendAnalysisSetSubscriptions({AnalysisService.NAVIGATION: [pathname1]});
     List regions;
     onAnalysisNavigation.listen((params) {
       expect(params['file'], equals(pathname1));
       regions = params['regions'];
     });
     return analysisFinished.then((_) {
       // There should be a single error, due to the fact that 'dart:async' is
       // not used.
       expect(currentAnalysisErrors[pathname1], hasLength(1));
       expect(currentAnalysisErrors[pathname2], isEmpty);
@@ skipping 37 matching lines @@
       checkLocal('field = 1', 'field;', 'SETTER');
       checkLocal('topLevelVariable;', 'topLevelVariable;', 'TOP_LEVEL_VARIABLE');
       checkLocal('TypeParameter field;', 'TypeParameter>', 'TYPE_PARAMETER');
     });
   }
 }
 
 main() {
   runReflectiveTests(AnalysisNavigationTest);
 }