Unify list.

runtime/lib/array.dart

 // 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.
 
-class ListFactory<E> {
-
-  factory List.from(Iterable<E> other) {
-    GrowableObjectArray<E> list = new GrowableObjectArray<E>();
-    for (final e in other) {
-      list.add(e);
-    }
-    return list;
-  }
-
-  factory List([int length = null]) {
-    if (length === null) {
-      return new GrowableObjectArray<E>();
-    } else {
-      return new ObjectArray<E>(length);
-    }
-  }
-}
 
 // TODO(srdjan): Use shared array implementation.
 class ObjectArray<E> implements List<E> {
 
   factory ObjectArray(int length) native "ObjectArray_allocate";
 
   E operator [](int index) native "ObjectArray_getIndexed";
 
   void operator []=(int index, E value) native "ObjectArray_setIndexed";
 
@@ skipping 285 matching lines @@
     if (!hasNext()) {
       throw const NoMoreElementsException();
     }
     return _array[_pos++];
   }
 
   final List<E> _array;
   final int _length;  // Cache array length for faster access.
   int _pos;
 }