Fixes for Angular

tool/input_sdk/lib/js/dart2js/js_dart2js.dart

Index: tool/input_sdk/lib/js/dart2js/js_dart2js.dart
diff --git a/tool/input_sdk/lib/js/dart2js/js_dart2js.dart b/tool/input_sdk/lib/js/dart2js/js_dart2js.dart
index 91bac6adfbde6d31a6881df93286e6e110c91db5..f8e5eed3dccb06da2c10bd7f5cdedad15d909a49 100644
--- a/tool/input_sdk/lib/js/dart2js/js_dart2js.dart
+++ b/tool/input_sdk/lib/js/dart2js/js_dart2js.dart
@@ -484,7 +484,8 @@ Object _convertToDart(o) {
   } else if (JS('bool', '# instanceof Date', o)) {
     var ms = JS('num', '#.getTime()', o);
     return new DateTime.fromMillisecondsSinceEpoch(ms);
-  } else if (o is _DartObject) {
+  } else if (o is _DartObject &&
+             JS('bool', 'dart.jsobject != dart.realRuntimeType(#)', o)) {

[vsm, 2015/09/02 19:14:32]

My earlier change had native JS objects returning true for any is check, and
that was causing a problem here.

     return o._dartObj;
   } else {
     return _putIfAbsent(_dartProxies, o, _wrapToDart);