Refresh dart:dom libraries from WebKit

client/dom/generated/src/frog/WebSocket.dart

 
 class WebSocketJs extends DOMTypeJs implements WebSocket native "*WebSocket" {
   WebSocket(String url) native;
 
 
   static final int CLOSED = 3;
 
   static final int CLOSING = 2;
 
   static final int CONNECTING = 0;
 
   static final int OPEN = 1;
 
   String get URL() native "return this.URL;";
 
   String get binaryType() native "return this.binaryType;";
 
   void set binaryType(String value) native "this.binaryType = value;";
 
   int get bufferedAmount() native "return this.bufferedAmount;";
 
   String get extensions() native "return this.extensions;";
 
   String get protocol() native "return this.protocol;";
 
   int get readyState() native "return this.readyState;";
 
+  String get url() native "return this.url;";
+
   void addEventListener(String type, EventListener listener, [bool useCapture = null]) native;
 
   void close([int code = null, String reason = null]) native;
 
   bool dispatchEvent(EventJs evt) native;
 
   void removeEventListener(String type, EventListener listener, [bool useCapture = null]) native;
 
   bool send(String data) native;
 }