Specify the types for Element.classes, Element.elements and Node.nodes

client/html/src/Element.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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.
 
 interface ElementList extends List<Element> {
   // TODO(jacobr): add element batch manipulation methods.
   ElementList filter(bool f(Element element));
 
   ElementList getRange(int start, int length);
 
   Element get first();
@@ skipping 69 matching lines @@
     default ElementWrappingImplementation {
 
   Element.html(String html);
   Element.tag(String tag);
 
   Map<String, String> get attributes();
   void set attributes(Map<String, String> value);
 
   ElementList get elements();
 
-  // TODO: The type of value should be Collection<Element>. See http://b/5392897
-  void set elements(value);
+  void set elements(Collection<Element> value);
 
   Set<String> get classes();
 
-  // TODO: The type of value should be Collection<String>. See http://b/5392897
-  void set classes(value);
+  void set classes(Collection<String> value);
 
   Map<String, String> get dataAttributes();
   void set dataAttributes(Map<String, String> value);
 
   String get contentEditable();
 
   void set contentEditable(String value);
 
   String get dir();
 
@@ skipping 84 matching lines @@
   Future<ElementRect> get rect();
 
   Future<CSSStyleDeclaration> get computedStyle();
 
   Future<CSSStyleDeclaration> getComputedStyle(String pseudoElement);
 
   ElementEvents get on();
 
   Element clone(bool deep);
 }