Generate dart:html bindings for Dartium as well as Frog. All unittests now pass (or are disabled fo…

client/html/generated/html/frog/MessageEvent.dart

+
+class _MessageEventImpl extends _EventImpl implements MessageEvent native "*MessageEvent" {
+
+  final Object data;
+
+  final String lastEventId;
+
+  final String origin;
+
+  final List ports;
+
+  final _WindowImpl source;
+
+  void initMessageEvent(String typeArg, bool canBubbleArg, bool cancelableArg, Object dataArg, String originArg, String lastEventIdArg, _WindowImpl sourceArg, List messagePorts) native;
+
+  void webkitInitMessageEvent(String typeArg, bool canBubbleArg, bool cancelableArg, Object dataArg, String originArg, String lastEventIdArg, _WindowImpl sourceArg, List transferables) native;
+}