Total now reads mortgage sample from server

samples/chat/http_impl.dart

Index: samples/chat/http_impl.dart
diff --git a/samples/chat/http_impl.dart b/samples/chat/http_impl.dart
index a5c3b5b5a47322e7b3c4264999903e62803c5e1c..fdc48c79c60327121e22db1dbdf89aea8fe2616c 100644
--- a/samples/chat/http_impl.dart
+++ b/samples/chat/http_impl.dart
@@ -704,7 +704,7 @@ class HTTPRequestImplementation
       _queryString = null;
     } else {
       _path = _uri.substring(0, position);
-      _queryString = _uri.substringToEnd(position + 1);
+      _queryString = _uri.substring(position + 1);
 
       // Simple parsing of the query string into request parameters.
       // TODO(sgjesse): Handle all detail e.g. encoding.
@@ -719,7 +719,7 @@ class HTTPRequestImplementation
         position = _queryString.indexOf("&", currentPosition);
         String value;
         if (position == -1) {
-          value = _queryString.substringToEnd(currentPosition);
+          value = _queryString.substring(currentPosition);
           currentPosition = _queryString.length;
         } else {
           value = _queryString.substring(currentPosition, position);