Add [CEReactions] IDL attributes for Custom Elements V1

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

Index: third_party/WebKit/Source/core/dom/DOMTokenList.idl
diff --git a/third_party/WebKit/Source/core/dom/DOMTokenList.idl b/third_party/WebKit/Source/core/dom/DOMTokenList.idl
index 6a4c9f772baa7bec83ea339e46c964271c7a3d9c..16a106af6f334729a711488ed33f734152616d73 100644
--- a/third_party/WebKit/Source/core/dom/DOMTokenList.idl
+++ b/third_party/WebKit/Source/core/dom/DOMTokenList.idl
@@ -30,11 +30,11 @@
     readonly attribute unsigned long length;
     getter DOMString? item(unsigned long index);
     [RaisesException] boolean contains(DOMString token);
-    [RaisesException, CustomElementCallbacks] void add(DOMString... tokens);
-    [RaisesException, CustomElementCallbacks] void remove(DOMString... tokens);
-    [RaisesException, CustomElementCallbacks] boolean toggle(DOMString token, optional boolean force);
+    [RaisesException, CEReactions, CustomElementCallbacks] void add(DOMString... tokens);
+    [RaisesException, CEReactions, CustomElementCallbacks] void remove(DOMString... tokens);
+    [RaisesException, CEReactions, CustomElementCallbacks] boolean toggle(DOMString token, optional boolean force);
     [RaisesException, CustomElementCallbacks] boolean supports(DOMString token);
-    attribute DOMString value;
+    [CEReactions] attribute DOMString value;
     stringifier;
     iterable<DOMString>;