Simplify Supplementables post Oilpan.

third_party/WebKit/Source/core/workers/WorkerGlobalScope.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009, 2011 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 393 matching lines @@
 }
 
 v8::Local<v8::Object> WorkerGlobalScope::associateWithWrapper(v8::Isolate*, const WrapperTypeInfo*, v8::Local<v8::Object> wrapper)
 {
     RELEASE_NOTREACHED(); // same as wrap method
     return v8::Local<v8::Object>();
 }
 
 DEFINE_TRACE(WorkerGlobalScope)
 {
-#if ENABLE(OILPAN)
     visitor->trace(m_console);
     visitor->trace(m_location);
     visitor->trace(m_navigator);
     visitor->trace(m_scriptController);
     visitor->trace(m_workerInspectorController);
     visitor->trace(m_eventQueue);
     visitor->trace(m_workerClients);
     visitor->trace(m_timers);
     visitor->trace(m_messageStorage);
     visitor->trace(m_pendingMessages);
     visitor->trace(m_eventListeners);
-    HeapSupplementable<WorkerGlobalScope>::trace(visitor);
-#endif
     ExecutionContext::trace(visitor);
     EventTargetWithInlineData::trace(visitor);
     SecurityContext::trace(visitor);
+    Supplementable<WorkerGlobalScope>::trace(visitor);
 }
 
 } // namespace blink