Fixing up history test to pass properly on supported platforms.

sdk/lib/html/dart2js/html_dart2js.dart

 library html;
 
 import 'dart:collection';
 import 'dart:html_common';
 import 'dart:indexed_db';
 import 'dart:isolate';
 import 'dart:json';
 import 'dart:svg' as svg;
 import 'dart:web_audio' as web_audio;
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
@@ skipping 9760 matching lines @@
   String align;
 }
 // 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.
 
 
 /// @domName History; @docsEditable true
 class History implements HistoryBase native "*History" {
 
+  /**
+   * Checks if the State APIs are supported on the current platform.
+   *
+   * See also:
+   *
+   * * [pushState]
+   * * [replaceState]
+   * * [state]
+   */
+  static bool get supportsState => JS('bool', '!!window.history.pushState');
+
   /// @domName History.length; @docsEditable true
   final int length;
 
   /// @domName History.state; @docsEditable true
   dynamic get state => _convertNativeToDart_SerializedScriptValue(this._state);
   @JSName('state')
   @annotation_Creates_SerializedScriptValue @annotation_Returns_SerializedScriptValue
   final dynamic _state;
 
   /// @domName History.back; @docsEditable true
   void back() native;
 
   /// @domName History.forward; @docsEditable true
   void forward() native;
 
   /// @domName History.go; @docsEditable true
   void go(int distance) native;
 
   /// @domName History.pushState; @docsEditable true
+  @SupportedBrowser(SupportedBrowser.CHROME) @SupportedBrowser(SupportedBrowser.FIREFOX) @SupportedBrowser(SupportedBrowser.IE, '10') @SupportedBrowser(SupportedBrowser.SAFARI)

[Emily Fortuna, 2012/12/28 22:58:54]

Can these be on separate lines? 

[blois, 2012/12/28 23:03:45]

Requires a refactor of the dart2js annotations- currently it only supports
single line.

I would like to do this (I made the Dartium one do it correctly), but this one
is piggy-backed on top of the existing dart2js annotations and I need to
coordinate with Stephen. 

So, yes, but prefer not this CL.

   void pushState(Object data, String title, [String url]) native;
 
   /// @domName History.replaceState; @docsEditable true
+  @SupportedBrowser(SupportedBrowser.CHROME) @SupportedBrowser(SupportedBrowser.FIREFOX) @SupportedBrowser(SupportedBrowser.IE, '10') @SupportedBrowser(SupportedBrowser.SAFARI)
   void replaceState(Object data, String title, [String url]) native;
 }
 // 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.
 
 
 /// @domName HTMLAllCollection; @docsEditable true
 class HtmlAllCollection implements JavaScriptIndexingBehavior, List<Node> native "*HTMLAllCollection" {
 
@@ skipping 15663 matching lines @@
   T next() {
     if (!hasNext) {
       throw new StateError("No more elements");
     }
     return _array[_pos++];
   }
 
   final List<T> _array;
   int _pos;
 }