Updates dartc to recognize 'default' keyword on interface and updated factory method syntax

compiler/lib/implementation/array.dart

Index: compiler/lib/implementation/array.dart
diff --git a/compiler/lib/implementation/array.dart b/compiler/lib/implementation/array.dart
index 74f64e3d6784f7e0d1991061e8048f846106203e..1ce9166dc6028832d12079aa7a7ed866a506f049 100644
--- a/compiler/lib/implementation/array.dart
+++ b/compiler/lib/implementation/array.dart
@@ -2,8 +2,8 @@
 // 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.
 
-class ListFactory {
-  factory List<E>.from(Iterable<E> other) {
+class ListFactory<E> {
+  factory List.from(Iterable<E> other) {
     List<E> list = new List<E>();
     for (final e in other) {
       list.add(e);
@@ -11,7 +11,7 @@ class ListFactory {
     return list;
   }
 
-  factory List<E>([int length = null]) {
+  factory List([int length = null]) {
     bool isFixed = true;
     if (length === null) {
       length = 0;