Roll WebKit IDL to multivm@858

third_party/WebCore/xml/XSLTProcessor.idl

Index: third_party/WebCore/xml/XSLTProcessor.idl
diff --git a/third_party/WebCore/xml/XSLTProcessor.idl b/third_party/WebCore/xml/XSLTProcessor.idl
index 48ec6c20e1dd90bc8000816d6fbeaf950492132d..c739b0157d947fb2e3c50e0b907d2a7fbac8fed2 100644
--- a/third_party/WebCore/xml/XSLTProcessor.idl
+++ b/third_party/WebCore/xml/XSLTProcessor.idl
@@ -37,9 +37,9 @@ module xml {
         Constructor
     ] XSLTProcessor {
         
-        [Custom] void importStylesheet(in Node stylesheet);
-        [Custom] DocumentFragment transformToFragment(in Node source, in Document docVal);
-        [Custom] Document transformToDocument(in Node source);
+        void importStylesheet(in [Optional=DefaultIsUndefined] Node stylesheet);
+        DocumentFragment transformToFragment(in [Optional=DefaultIsUndefined] Node source, in [Optional=DefaultIsUndefined] Document docVal);
+        Document transformToDocument(in [Optional=DefaultIsUndefined] Node source);
 
         [Custom] void setParameter(in DOMString namespaceURI, in DOMString localName, in DOMString value);
         [Custom, TreatReturnedNullStringAs=Undefined] DOMString getParameter(in DOMString namespaceURI, in DOMString localName);