Support non-function object values assigned to EventHandler attributes

Source/bindings/core/v8/V8EventListenerList.h

Index: Source/bindings/core/v8/V8EventListenerList.h
diff --git a/Source/bindings/core/v8/V8EventListenerList.h b/Source/bindings/core/v8/V8EventListenerList.h
index 9271197dc36c3377201e9baec05f7798788bc34e..596ad8b4ec475916c3728a24822f982ea5474ac5 100644
--- a/Source/bindings/core/v8/V8EventListenerList.h
+++ b/Source/bindings/core/v8/V8EventListenerList.h
@@ -89,9 +89,7 @@ PassRefPtr<V8EventListener> V8EventListenerList::findOrCreateWrapper(v8::Local<v
 {
     v8::Isolate* isolate = scriptState->isolate();
     ASSERT(isolate->InContext());
-    if (!value->IsObject()
-        // Non-callable attribute setter input is treated as null (no wrapper)
-        || (isAttribute && !value->IsFunction()))
+    if (!value->IsObject())
         return nullptr;
 
     v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value);