Remove [NoInterfaceObject] from XPathExpression and NodeIterator

Source/core/xml/XPathExpression.idl

Index: Source/core/xml/XPathExpression.idl
diff --git a/Source/core/xml/XPathExpression.idl b/Source/core/xml/XPathExpression.idl
index 3a3b1b2cf6bc00b47e310d206b44edff08505d3b..cf7c6cf05a7c8d36a2a1b17270735bf08c37376b 100644
--- a/Source/core/xml/XPathExpression.idl
+++ b/Source/core/xml/XPathExpression.idl
@@ -17,9 +17,7 @@
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
-[
-    NoInterfaceObject
-] interface XPathExpression {
+interface XPathExpression {
      [RaisesException] XPathResult evaluate([Default=Undefined] optional Node contextNode, 
                                         [Default=Undefined] optional unsigned short type, 
                                         [Default=Undefined] optional XPathResult inResult);