Reinstall previous behavior for Set and Queue toString.

runtime/lib/array.dart

Index: runtime/lib/array.dart
diff --git a/runtime/lib/array.dart b/runtime/lib/array.dart
index c86ff8fcc4fd3e075d34af46d989bd1a087bad4c..185a1e78cbc3c43a9ceaf7eea30e2ce0c7ac762f 100644
--- a/runtime/lib/array.dart
+++ b/runtime/lib/array.dart
@@ -13,9 +13,7 @@ class _List<E> implements List<E> {
 
   void operator []=(int index, E value) native "List_setIndexed";
 
-  String toString() {
-    return IterableMixinWorkaround.toStringIterable(this,'[' , ']');
-  }
+  String toString() => ListBase.listToString(this);

[floitsch, 2014/05/23 16:09:58]

runtime/lib files preferred to avoid the "=>" syntax.
Not sure if that has changed.

[Lasse Reichstein Nielsen, 2014/05/23 16:50:01]

I have no problem using brackets instead.

 
   int get length native "List_getLength";
 
@@ -442,9 +440,7 @@ class _ImmutableList<E> implements List<E> {
     throw UnmodifiableListError.change();
   }
 
-  String toString() {
-    return IterableMixinWorkaround.toStringIterable(this, '[', ']');
-  }
+  String toString() => ListBase.listToString(this);
 
   int indexOf(Object element, [int start = 0]) {
     return Lists.indexOf(this, element, start, this.length);