anchor.diff:    /** Locate nodes with id and store references to them in [$] hash. */
     void marshalNodeReferences(Node root) {
       if (root == null) return;
  -    for (var n in root.queryAll('[id]')) {
  +    for (var n in (root as dynamic).queryAll('[id]')) {
         $[n.id] = n;
       }
     }
  
positive.code:  * The mixin class for Polymer elements. It provides convenience features on top
   * of the custom elements web standard.
   */
  abstract class Polymer implements Element {
    // Fully ported from revision:
    // https://github.com/Polymer/polymer/blob/4dc481c11505991a7c43228d3797d28f21267779
    //
  
negative.code:   //
    // Not yet ported:
    //   src/instance/style.js -- blocked on ShadowCSS.shimPolyfillDirectives
  
    // TODO(jmesserly): should this really be public?
    /** Regular expression that matches data-bindings. */
  