[wrapper-tracing] Fix tracing of EventTargetWithInlineData

third_party/WebKit/Source/modules/webmidi/MIDIPort.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 151 matching lines @@
 }
 
 DEFINE_TRACE(MIDIPort) {
   visitor->trace(m_access);
   EventTargetWithInlineData::trace(visitor);
   ActiveDOMObject::trace(visitor);
 }
 
 DEFINE_TRACE_WRAPPERS(MIDIPort) {
   visitor->traceWrappers(m_access);
+  EventTargetWithInlineData::traceWrappers(visitor);
 }
 
 void MIDIPort::open() {
   switch (m_state) {
     case PortState::DISCONNECTED:
       setStates(m_state, ConnectionStatePending);
       break;
     case PortState::CONNECTED:
       // TODO(toyoshim): Add blink API to perform a real open and close
       // operation.
@@ skipping 22 matching lines @@
   DCHECK(state != PortState::DISCONNECTED || connection != ConnectionStateOpen);
   if (m_state == state && m_connection == connection)
     return;
   m_state = state;
   m_connection = connection;
   dispatchEvent(MIDIConnectionEvent::create(this));
   m_access->dispatchEvent(MIDIConnectionEvent::create(this));
 }
 
 }  // namespace blink