Updating Angular version

third_party/pkg/angular/lib/core_dom/common.dart

 part of angular.core.dom;
 
 List<dom.Node> cloneElements(elements) {
-  var clones = [];
-  for(var i = 0, ii = elements.length; i < ii; i++) {
-    clones.add(elements[i].clone(true));
-  }
-  return clones;
+  return elements.map((el) => el.clone(true)).toList();
 }
 
 typedef ApplyMapping(NodeAttrs attrs, Scope scope, Object dst);
 
 class DirectiveRef {
   final dom.Node element;
   final Type type;
   final NgAnnotation annotation;
   final String value;
   final List<ApplyMapping> mappings = new List<ApplyMapping>();
 
   BlockFactory blockFactory;
 
   DirectiveRef(this.element, this.type, this.annotation, [ this.value ]);
 
   String toString() {
     var html = element is dom.Element ? (element as dom.Element).outerHtml : element.nodeValue;
     return '{ element: $html, selector: ${annotation.selector}, value: $value }';
   }
 }