Get rid of custom code for Document::createTouchList()

Source/core/dom/Document.idl

Index: Source/core/dom/Document.idl
diff --git a/Source/core/dom/Document.idl b/Source/core/dom/Document.idl
index 6340b00dacacf9ff2da6e6adf2a08cea9bd2d7c3..a18606dcb1c4f64535cbb8769ff4f97db7396551 100644
--- a/Source/core/dom/Document.idl
+++ b/Source/core/dom/Document.idl
@@ -259,7 +259,7 @@ callback CustomElementConstructor = Element ();
                                                [Default=Undefined] optional long webkitRadiusY,
                                                [Default=Undefined] optional float webkitRotationAngle,
                                                [Default=Undefined] optional float webkitForce);
-    [EnabledAtRuntime=Touch, Custom, RaisesException] TouchList createTouchList();
+    [EnabledAtRuntime=Touch] TouchList createTouchList(Touch... touches);
 
     [DeprecateAs=PrefixedDocumentRegister, EnabledAtRuntime=CustomElements, ImplementedAs=registerElement, CallWith=ScriptState, CustomElementCallbacks=Enable, RaisesException] CustomElementConstructor webkitRegister(DOMString name, optional Dictionary options);
     [EnabledAtRuntime=CustomElements, ImplementedAs=registerElement, CallWith=ScriptState, CustomElementCallbacks=Enable, RaisesException] CustomElementConstructor register(DOMString name, optional Dictionary options);