Remove Comprehension type in polymer expressions

pkg/polymer/test/nested_binding_test.dart

 // Copyright (c) 2013, 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 polymer.test.nested_binding_test;
 
 import 'dart:async';
 import 'dart:html';
 import 'package:polymer/polymer.dart';
 import 'package:unittest/unittest.dart';
 import 'package:unittest/html_config.dart';
 
 @CustomTag('my-test')
 class MyTest extends PolymerElement {
   final List fruits = toObservable(['apples', 'oranges', 'pears']);
 
   final _testDone = new Completer();
 
   MyTest.created() : super.created();
 
-  _runTest(_) {
+  ready() {
     expect($['fruit'].text.trim(), 'Short name: [pears]');
     _testDone.complete();
   }
-
-  ready() {
-    onMutation($['fruit']).then(_runTest);

[Siggi Cherem (dart-lang), 2014/05/30 21:36:03]

with this change I'm seeing the mutation already in the page by the time ready
is called

-  }
 }
 
 main() => initPolymer().run(() {
   useHtmlConfiguration();
 
   setUp(() => Polymer.onReady);
 
   test('ready called',
       () => (querySelector('my-test') as MyTest)._testDone.future);
 });