Implement automatically generated constructors for frog and dartium dart:html

client/html/generated/html/interface/XMLHttpRequest.dart

Index: client/html/generated/html/interface/XMLHttpRequest.dart
diff --git a/client/html/generated/html/interface/XMLHttpRequest.dart b/client/html/generated/html/interface/XMLHttpRequest.dart
index 325d3e765819aeb4c3c9bfa34d71ec2c098799e0..8fee5b9c1685bfbc8dd5b59e42399e10607145da 100644
--- a/client/html/generated/html/interface/XMLHttpRequest.dart
+++ b/client/html/generated/html/interface/XMLHttpRequest.dart
@@ -5,13 +5,12 @@
 // WARNING: Do not edit - generated code.
 
 interface XMLHttpRequest extends EventTarget default _XMLHttpRequestFactoryProvider {
-
-  XMLHttpRequest();
-
   // TODO(rnystrom): This name should just be "get" which is valid in Dart, but
   // not correctly implemented yet. (b/4970173)
   XMLHttpRequest.getTEMPNAME(String url, onSuccess(XMLHttpRequest request));
 
+  XMLHttpRequest();
+
   static final int DONE = 4;
 
   static final int HEADERS_RECEIVED = 2;