Recommit changing List.skip/take/revert returns Iterable and remove mappedBy.

tools/dom/templates/html/impl/impl_Element.darttemplate

 // 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 $LIBRARYNAME;
 
 // TODO(jacobr): use _Lists.dart to remove some of the duplicated
 // functionality.
 class _ChildrenElementList implements List {
   // Raw Element.
@@ skipping 47 matching lines @@
   }
 
   String join([String separator]) {
     return IterableMixinWorkaround.joinList(this, separator);
   }
 
   Iterable map(f(Element element)) {
     return IterableMixinWorkaround.mapList(this, f);
   }
 
-  List mappedBy(f(Element element)) {
-    return IterableMixinWorkaround.mappedByList(this, f);
-  }
-
   Iterable<Element> where(bool f(Element element)) {
     return IterableMixinWorkaround.where(this, f);
   }
 
   Iterable expand(Iterable f(Element element)) {
     return IterableMixinWorkaround.expand(this, f);
   }
 
   bool get isEmpty {
     return _element.$dom_firstElementChild == null;
@@ skipping 60 matching lines @@
   void addAll(Iterable<Element> iterable) {
     if (iterable is _ChildNodeListLazy) {
       iterable = new List.from(iterable);
     }
 
     for (Element element in iterable) {
       _element.$dom_appendChild(element);
     }
   }
 
-  List<Element> get reversed {
+  Iterable<Element> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
   void sort([int compare(Element a, Element b)]) {
     throw new UnsupportedError('TODO(jacobr): should we impl?');
   }
 
   dynamic reduce(dynamic initialValue,
       dynamic combine(dynamic previousValue, Element element)) {
     return IterableMixinWorkaround.reduce(this, initialValue, combine);
@@ skipping 120 matching lines @@
   }
 
   String join([String separator]) {
     return IterableMixinWorkaround.joinList(this, separator);
   }
 
   Iterable map(f(Element element)) {
     return IterableMixinWorkaround.mapList(this, f);
   }
 
-  List mappedBy(f(Element element)) {
-    return IterableMixinWorkaround.mappedByList(this, f);
-  }
-
   Iterable<Element> where(bool f(Element element)) {
     return IterableMixinWorkaround.where(this, f);
   }
 
   Iterable expand(Iterable f(Element element)) {
     return IterableMixinWorkaround.expand(this, f);
   }
 
   bool every(bool f(Element element)) {
     for(Element element in this) {
@@ skipping 69 matching lines @@
   void addLast(Element value) {
     throw new UnsupportedError('');
   }
 
   Iterator<Element> get iterator => new _FrozenElementListIterator(this);
 
   void addAll(Iterable<Element> iterable) {
     throw new UnsupportedError('');
   }
 
-  List<Element> get reversed {
+  Iterable<Element> get reversed {
     return IterableMixinWorkaround.reversedList(this);
   }
 
   void sort([int compare(Element a, Element b)]) {
     throw new UnsupportedError('');
   }
 
   dynamic reduce(dynamic initialValue,
       dynamic combine(dynamic previousValue, Element element)) {
     return IterableMixinWorkaround.reduce(this, initialValue, combine);
@@ skipping 719 matching lines @@
   const ScrollAlignment._internal(this._value);
   toString() => 'ScrollAlignment.$_value';
 
   /// Attempt to align the element to the top of the scrollable area.
   static const TOP = const ScrollAlignment._internal('TOP');
   /// Attempt to center the element in the scrollable area.
   static const CENTER = const ScrollAlignment._internal('CENTER');
   /// Attempt to align the element to the bottom of the scrollable area.
   static const BOTTOM = const ScrollAlignment._internal('BOTTOM');
 }