Added new version of reduce.

tools/dom/templates/immutable_list_mixin.darttemplate

   // -- start List<$E> mixins.
   // $E is the element type.
 
   // From Iterable<$E>:
 
   Iterator<$E> get iterator {
     // Note: NodeLists are not fixed size. And most probably length shouldn't
     // be cached in both iterator _and_ forEach method. For now caching it
     // for consistency.
     return new FixedSizeListIterator<$E>(this);
   }
 
 $if DEFINE_LENGTH_AS_NUM_ITEMS
   // SVG Collections expose numberOfItems rather than length.
   int get length => numberOfItems;
 $endif
-  dynamic reduce(dynamic initialValue, dynamic combine(dynamic, $E)) {
-    return IterableMixinWorkaround.reduce(this, initialValue, combine);
+  $E reduce($E combine($E value, $E element)) {
+    return IterableMixinWorkaround.reduce(this, combine);
   }
 
-  dynamic fold(dynamic initialValue, dynamic combine(dynamic, $E)) {
+  dynamic fold(dynamic initialValue,
+               dynamic combine(dynamic previousValue, $E element)) {
     return IterableMixinWorkaround.fold(this, initialValue, combine);
   }
 
 $if DEFINE_CONTAINS
   bool contains($E element) => IterableMixinWorkaround.contains(this, element);
 $else
   // contains() defined by IDL.
 $endif
 
   void forEach(void f($E element)) => IterableMixinWorkaround.forEach(this, f);
@@ skipping 99 matching lines @@
     if (this.length > 0) return this[this.length - 1];
     throw new StateError("No elements");
   }
 
   $E get single {
     if (length == 1) return this[0];
     if (length == 0) throw new StateError("No elements");
     throw new StateError("More than one element");
   }
 
-  $E min([int compare($E a, $E b)]) =>
-      IterableMixinWorkaround.min(this, compare);
-
-  $E max([int compare($E a, $E b)]) =>
-      IterableMixinWorkaround.max(this, compare);
-
   void insert(int index, $E element) {
     throw new UnsupportedError("Cannot add to immutable List.");
   }
 
   $E removeAt(int pos) {
     throw new UnsupportedError("Cannot remove from immutable List.");
   }
 
   $E removeLast() {
     throw new UnsupportedError("Cannot remove from immutable List.");
@@ skipping 43 matching lines @@
     IterableMixinWorkaround.asMapList(this);
 
   String toString() {
     StringBuffer buffer = new StringBuffer('[');
     buffer.writeAll(this, ', ');
     buffer.write(']');
     return buffer.toString();
   }
 
   // -- end List<$E> mixins.