Fix deprecation hints

pkg/analysis_server/bin/fuzz.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.
 
 import 'dart:async';
 import 'dart:io';
 
 import 'package:args/args.dart';
 import 'package:matcher/matcher.dart';
 import 'package:path/path.dart' as path;
 
 import 'fuzz/server_manager.dart';
 
 /**
  * Start analysis server as a separate process and use the stdio to communicate
  * with the server.
  */
 void main(List<String> args) {
   new _FuzzTest().run(args);
 }
 
 /**
  * Instances of [_FuzzTest] launch and test an analysis server.
  * You must specify the location of the Dart SDK and the directory
  * containing sources to be analyzed.
  */
 class _FuzzTest {
+  /**
+   * The name of the application that is used to start the fuzz tester.
+   */
+  static const BINARY_NAME = 'fuzz';
 
   //TODO (danrubel) extract common behavior for use in multiple test scenarios
   //TODO (danrubel) cleanup test to use async/await for better readability
   // VM flag --enable_async
 
   static const String DART_SDK_OPTION = 'dart-sdk';
   static const String HELP_OPTION = 'help';
 
   File serverSnapshot;
   Directory appDir;
@@ skipping 113 matching lines @@
   }
 
   void _printAnalysisSummary(AnalysisResults results) {
     print(
         'Found ${results.errorCount} errors, ${results.warningCount} warnings,'
             ' and ${results.hintCount} hints in $results.elapsed');
   }
 
   /// Print information about how to use the server.
   void _printUsage(ArgParser parser) {
-    print('Usage: analyzer [flags] <application_directory>');
+    print('Usage: $BINARY_NAME [flags] <application_directory>');
     print('');
     print('Supported flags are:');
-    print(parser.getUsage());
+    print(parser.usage);
   }
 }