Update pub to new getter syntax.

utils/pub/pub.dart

 // Copyright (c) 2012, 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.
 
 /**
  * The main entrypoint for the pub command line application.
  */
 #library('pub');
 
 #import('../../pkg/args/args.dart');
@@ skipping 10 matching lines @@
 #import('package.dart');
 #import('pubspec.dart');
 #import('repo_source.dart');
 #import('sdk_source.dart');
 #import('source.dart');
 #import('source_registry.dart');
 #import('system_cache.dart');
 #import('utils.dart');
 #import('version.dart');
 
-Version get pubVersion() => new Version(0, 0, 0);
+Version get pubVersion => new Version(0, 0, 0);
 
 /**
  * The commands that Pub understands.
  */
-Map<String, PubCommand> get pubCommands() => {
+Map<String, PubCommand> get pubCommands => {
   'help': new HelpCommand(),
   'list': new ListCommand(),
   'install': new InstallCommand(),
   'update': new UpdateCommand(),
   'version': new VersionCommand()
 };
 
 /**
  * The parser for arguments that are global to Pub rather than specific to a
  * single command.
  */
-ArgParser get pubArgParser() {
+ArgParser get pubArgParser {
   var parser = new ArgParser();
   parser.addFlag('help', abbr: 'h', negatable: false,
     help: 'Prints this usage information');
   parser.addFlag('version', negatable: false,
     help: 'Prints the version of Pub');
   parser.addFlag('trace', help: 'Prints a stack trace when an error occurs');
   return parser;
 }
 
 main() {
@@ skipping 84 matching lines @@
 class PubCommand {
   SystemCache cache;
   ArgResults globalOptions;
   ArgResults commandOptions;
 
   Entrypoint entrypoint;
 
   /**
    * A one-line description of this command.
    */
-  abstract String get description();
+  abstract String get description;
 
   /**
    * How to invoke this command (e.g. `"pub install [package]"`).
    */
-  abstract String get usage();
+  abstract String get usage;
 
   /**
    * Override this to define command-specific options. The results will be made
    * available in [commandOptions].
    */
-  ArgParser get commandParser() => new ArgParser();
+  ArgParser get commandParser => new ArgParser();
 
   void run(SystemCache cache_, ArgResults globalOptions_,
       List<String> commandArgs) {
     cache = cache_;
     globalOptions = globalOptions_;
 
     try {
      commandOptions = commandParser.parse(commandArgs);
     } catch (FormatException e) {
       this.printUsage(description: e.message);
@@ skipping 53 matching lines @@
     print('');
     print('Usage: $usage');
 
     var commandUsage = commandParser.getUsage();
     if (!commandUsage.isEmpty()) {
       print('');
       print(commandUsage);
     }
   }
 }