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

pkg/analysis_server/test/integration/analysis/outline_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.outline;
 
-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 Test extends AbstractAnalysisServerIntegrationTest {
   test_outline() {
     String pathname = sourcePath('test.dart');
     String text =
         r'''
 class Class1 {
   int field;
@@ skipping 11 matching lines @@
   set setter(value) {
   }
 }
 
 class Class2 {
 }
 ''';
     writeFile(pathname, text);
     standardAnalysisSetup();
     sendAnalysisSetSubscriptions({
-      'OUTLINE': [pathname]
+      AnalysisService.OUTLINE: [pathname]
     });
     Map outline;
     onAnalysisOutline.listen((params) {
       expect(params['file'], equals(pathname));
       outline = params['outline'];
     });
     return analysisFinished.then((_) {
       expect(outline['element']['kind'], equals('COMPILATION_UNIT'));
       expect(outline['offset'], equals(0));
       expect(outline['length'], equals(text.length));
@@ skipping 22 matching lines @@
     for (int i = 0; i < outlineObjects.length - 1; i++) {
       expect(outlineObjects[i + 1]['offset'], equals(outlineObjects[i]['offset']
           + outlineObjects[i]['length']));
     }
   }
 }
 
 main() {
   runReflectiveTests(Test);
 }