Various clean up.

dart/site/try/poi/poi.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 trydart.poi;
 
 import 'dart:async' show
     Completer,
     Future;
 
 import 'dart:io' as io;
 
 import 'dart:convert' show
     UTF8;
 
 import 'package:dart2js_incremental/dart2js_incremental.dart' show
+    INCREMENTAL_OPTIONS,
     reuseCompiler;
 
 import 'package:dart2js_incremental/library_updater.dart' show
     LibraryUpdater;
 
 import 'package:compiler/src/source_file_provider.dart' show
     FormattingDiagnosticHandler;
 
 import 'package:compiler/compiler.dart' as api;
 
@@ skipping 351 matching lines @@
     int position,
     api.CompilerInputProvider inputProvider,
     api.DiagnosticHandler handler) {
   Stopwatch sw = new Stopwatch()..start();
   Uri libraryRoot = Uri.base.resolve('sdk/');
   Uri packageRoot = Uri.base.resolveUri(
       new Uri.file('${io.Platform.packageRoot}/'));
 
   var options = [
       '--analyze-main',
-      '--no-source-maps',
       '--verbose',
       '--categories=Client,Server',
-      '--incremental-support',
-      '--disable-type-inference',
   ];
+  options.addAll(INCREMENTAL_OPTIONS);
 
   if (!isCompiler) {
     options.add('--analyze-only');
   }
 
   if (enableMinification) {
     options.add('--minify');
   }
 
   LibraryUpdater updater;
@@ skipping 142 matching lines @@
       printWallClock('Skipped ${work.element}.');
     }
   }
 }
 
 class PoiTask extends CompilerTask {
   PoiTask(Compiler compiler) : super(compiler);
 
   String get name => 'POI';
 }