Enable parsing of IPv6 form addresse (see rfc2373 and rfc2732).

sdk/lib/io/http.dart

Index: sdk/lib/io/http.dart
diff --git a/sdk/lib/io/http.dart b/sdk/lib/io/http.dart
index 853b8581dc7a540144728dd33e5e04999117a9ce..87cabc3083be9fbbd050d7dc6da2ec18295bfb64 100644
--- a/sdk/lib/io/http.dart
+++ b/sdk/lib/io/http.dart
@@ -806,7 +806,7 @@ abstract class HttpResponse implements IOSink {
  * provided which provides access to the headers and body of the response.
  *
  *     HttpClient client = new HttpClient();
- *     client.getUrl(new Uri.fromString("http://www.example.com/"))
+ *     client.getUrl(Uri.parse("http://www.example.com/"))
  *         .then((HttpClientRequest request) {
  *           // Prepare the request then call close on it to send it.
  *           return request.close();