Fix a variety of service protocol bugs.

runtime/lib/isolate_patch.dart

Index: runtime/lib/isolate_patch.dart
diff --git a/runtime/lib/isolate_patch.dart b/runtime/lib/isolate_patch.dart
index 9142ff9bb88639bf78440af2ad249f5dd196f8a7..51b7ac0123147c1e9103d2875bf0efae471fcf42 100644
--- a/runtime/lib/isolate_patch.dart
+++ b/runtime/lib/isolate_patch.dart
@@ -130,6 +130,8 @@ class _RawReceivePortImpl implements RawReceivePort {
     return sendPort.hashCode();
   }
 
+  Uri get remotePortUri => new Uri.https('localhost', '55');
+
   /**** Internal implementation details ****/
   _get_id() native "RawReceivePortImpl_get_id";
   _get_sendport() native "RawReceivePortImpl_get_sendport";