Fixed wrap_jso recursive calls - now rely on Utils_constructor_create to call setDartHtmlWrapper pr…

tools/dom/templates/html/dartium/html_dartium.darttemplate

Index: tools/dom/templates/html/dartium/html_dartium.darttemplate
diff --git a/tools/dom/templates/html/dartium/html_dartium.darttemplate b/tools/dom/templates/html/dartium/html_dartium.darttemplate
index 2d157eab2139761fc4c650918f88da1636251fd0..5885320896551b07e3c08c3ba6a6c0132330c8fe 100644
--- a/tools/dom/templates/html/dartium/html_dartium.darttemplate
+++ b/tools/dom/templates/html/dartium/html_dartium.darttemplate
@@ -449,24 +449,8 @@ wrap_jso(jsObject) {
     }
 
     var wrapper = js.getDartHtmlWrapperFor(jsObject);
-    // if we have a wrapper and and it's an upgraded custom element return the Dart instance.
+    // if we have a wrapper return the Dart instance.
     if (wrapper != null) {
-      if (wrapper.runtimeType == HtmlElement && !wrapper._isBadUpgrade) {
-        // We're a Dart instance but we need to upgrade.
-        var customElementClass = _getCustomElementType(wrapper);
-        if (customElementClass != null) {
-          var dartClass_instance;
-          try {
-            dartClass_instance = _blink.Blink_Utils.constructElement(customElementClass, jsObject);
-          } finally {
-            dartClass_instance.blink_jsObject = jsObject;
-            jsObject['dart_class'] = dartClass_instance;
-            js.setDartHtmlWrapperFor(jsObject, dartClass_instance);
-            return dartClass_instance;
-          }
-        }
-      }
-
       return wrapper;
     }