Added method map to Collection interface and all its implementations (except classes generated fr...

client/html/src/DocumentFragmentWrappingImplementation.dart

 // Copyright (c) 2011, 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 FilteredElementList implements ElementList {
   final Node _node;
   final NodeList _childNodes;
 
   FilteredElementList(Node node): _childNodes = node.nodes, _node = node;
 
@@ skipping 72 matching lines @@
   }
 
   Element removeLast() {
     var last = this.last();
     if (last != null) {
       last.remove();
     }
     return last;
   }
 
+  Collection map(f(Element element)) => _filtered.map(f);
   Collection<Element> filter(bool f(Element element)) => _filtered.filter(f);
   bool every(bool f(Element element)) => _filtered.every(f);
   bool some(bool f(Element element)) => _filtered.some(f);
   bool isEmpty() => _filtered.isEmpty();
   int get length() => _filtered.length;
   Element operator [](int index) => _filtered[index];
   Iterator<Element> iterator() => _filtered.iterator();
   List<Element> getRange(int start, int length) =>
     _filtered.getRange(start, length);
   int indexOf(Element element, [int start = 0]) =>
@@ skipping 261 matching lines @@
       "Title can't be set for document fragments.");
   }
 
   void set webkitdropzone(String value) {
     throw new UnsupportedOperationException(
       "WebKit drop zone can't be set for document fragments.");
   }
 
   DocumentFragment clone(bool deep) => super.clone(deep);
 }