Add [CEReactions] IDL attributes for Custom Elements V1

third_party/WebKit/Source/core/dom/NamedNodeMap.idl

Index: third_party/WebKit/Source/core/dom/NamedNodeMap.idl
diff --git a/third_party/WebKit/Source/core/dom/NamedNodeMap.idl b/third_party/WebKit/Source/core/dom/NamedNodeMap.idl
index 9003607aefd14345245567a6efcf8247bdc10ea6..e07a906737b48c7877b0305350b8f55df86d290c 100644
--- a/third_party/WebKit/Source/core/dom/NamedNodeMap.idl
+++ b/third_party/WebKit/Source/core/dom/NamedNodeMap.idl
@@ -29,8 +29,8 @@
     [MeasureAs=NamedNodeMapGetNamedItem] Attr? getNamedItem(DOMString name);
     [NotEnumerable, ImplementedAs=getNamedItem] getter Attr? (DOMString name);
     [MeasureAs=NamedNodeMapGetNamedItemNS] Attr? getNamedItemNS(DOMString? namespaceURI, DOMString localName);
-    [RaisesException, CustomElementCallbacks, MeasureAs=NamedNodeMapSetNamedItem] Attr? setNamedItem(Attr attr);
-    [RaisesException, CustomElementCallbacks, MeasureAs=NamedNodeMapSetNamedItemNS] Attr? setNamedItemNS(Attr attr);
-    [RaisesException, CustomElementCallbacks, MeasureAs=NamedNodeMapRemoveNamedItem] Attr removeNamedItem(DOMString name);
-    [RaisesException, CustomElementCallbacks, MeasureAs=NamedNodeMapRemoveNamedItemNS] Attr removeNamedItemNS(DOMString? namespaceURI, DOMString localName);
+    [RaisesException, CEReactions, CustomElementCallbacks, MeasureAs=NamedNodeMapSetNamedItem] Attr? setNamedItem(Attr attr);
+    [RaisesException, CEReactions, CustomElementCallbacks, MeasureAs=NamedNodeMapSetNamedItemNS] Attr? setNamedItemNS(Attr attr);
+    [RaisesException, CEReactions, CustomElementCallbacks, MeasureAs=NamedNodeMapRemoveNamedItem] Attr removeNamedItem(DOMString name);
+    [RaisesException, CEReactions, CustomElementCallbacks, MeasureAs=NamedNodeMapRemoveNamedItemNS] Attr removeNamedItemNS(DOMString? namespaceURI, DOMString localName);
 };