[wrapper-tracing] Fix dispatching of TraceWrapperv8Reference

third_party/WebKit/Source/core/events/PromiseRejectionEvent.cpp

Index: third_party/WebKit/Source/core/events/PromiseRejectionEvent.cpp
diff --git a/third_party/WebKit/Source/core/events/PromiseRejectionEvent.cpp b/third_party/WebKit/Source/core/events/PromiseRejectionEvent.cpp
index 2a854b25e1bed7b579b493278228e45207e51973..d92390209d188e97cae733dd76a574abe5573647 100644
--- a/third_party/WebKit/Source/core/events/PromiseRejectionEvent.cpp
+++ b/third_party/WebKit/Source/core/events/PromiseRejectionEvent.cpp
@@ -20,11 +20,9 @@ PromiseRejectionEvent::PromiseRejectionEvent(
   DCHECK(initializer.hasPromise());
   m_promise.set(initializer.promise().isolate(),
                 initializer.promise().v8Value());
-  m_promise.setPhantom();
   if (initializer.hasReason()) {
     m_reason.set(initializer.reason().isolate(),
                  initializer.reason().v8Value());
-    m_reason.setPhantom();
   }
 }