Fix some failures in html/element_test by changing where(...)[0] to where(...).first.

sdk/lib/core/list.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.
 
 part of dart.core;
 
 /**
  * A [List] is an indexable collection with a length. It can be of
  * fixed size or extendable.
  */
@@ skipping 18 matching lines @@
    * The length of the returned list is not fixed.
    */
   external factory List.filled(int length, E fill);
 
   /**
    * Creates an list with the elements of [other]. The order in
    * the list will be the order provided by the iterator of [other].
    *
    * The length of the returned list is not fixed.
    */
-  factory List.from(Iterable<E> other) {
+  factory List.from(Iterable other) {
     var list = new List<E>();
     for (var e in other) {

[floitsch, 2013/01/07 14:59:02]

for (E e in other) {

       list.add(e);
     }
     return list;
   }
 
   /**
    * Returns the element at the given [index] in the list or throws
    * an [RangeError] if [index] is out of bounds.
    */
   E operator [](int index);
@@ skipping 372 matching lines @@
 
   ListView<E> take(int takeCount) {
     if (takeCount is! int || takeCount < 0) {
       throw new ArgumentError(takeCount);
     }
     int newLength = takeCount;
     if (_length != null && takeCount > _length) newLength = _length;
     return new ListView(_list, _offset, newLength);
   }
 }