Don't put private members in dart:html interfaces.

client/dom/templates/html/impl/impl_Element.darttemplate

Index: client/dom/templates/html/impl/impl_Element.darttemplate
diff --git a/client/dom/templates/html/impl/impl_Element.darttemplate b/client/dom/templates/html/impl/impl_Element.darttemplate
index 57503ae205959782f811ce22310036c04e57aef2..50360ef24f2cb95aaac088b4be56ffceaa66d129 100644
--- a/client/dom/templates/html/impl/impl_Element.darttemplate
+++ b/client/dom/templates/html/impl/impl_Element.darttemplate
@@ -533,9 +533,10 @@ class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
   }
 
   Future<CSSStyleDeclaration> getComputedStyle(String pseudoElement) {
-    return _createMeasurementFuture(() =>
-            window._getComputedStyle(this, pseudoElement),
-        new Completer<CSSStyleDeclaration>());
+    return _createMeasurementFuture(() {
+      final _WindowImpl win = window;

[Jacob, 2012/03/09 19:18:39]

You can use a handy top level getter called _window already defined for this
purpose.  Here and elsewhere switch to using _window and _document as needed.

[nweiz, 2012/03/09 20:58:57]

Done.

+      return win._getComputedStyle(this, pseudoElement);
+    }, new Completer<CSSStyleDeclaration>());
   }
 $!MEMBERS
 }