Oilpan: remove unnecessary ENABLE(OILPAN) protections of trace() calls.

Source/modules/indexeddb/IDBDatabase.cpp

 /*
  * Copyright (C) 2010 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 78 matching lines @@
 IDBDatabase::~IDBDatabase()
 {
     if (!m_closePending && m_backend)
         m_backend->close();
 }
 
 DEFINE_TRACE(IDBDatabase)
 {
     visitor->trace(m_versionChangeTransaction);
     visitor->trace(m_transactions);
-#if ENABLE(OILPAN)
     visitor->trace(m_enqueuedEvents);
-#endif
     visitor->trace(m_databaseCallbacks);
     RefCountedGarbageCollectedEventTargetWithInlineData<IDBDatabase>::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 int64_t IDBDatabase::nextTransactionId()
 {
     // Only keep a 32-bit counter to allow ports to use the other 32
     // bits of the id.
     static int currentTransactionId = 0;
@@ skipping 341 matching lines @@
 {
     return EventTargetNames::IDBDatabase;
 }
 
 ExecutionContext* IDBDatabase::executionContext() const
 {
     return ActiveDOMObject::executionContext();
 }
 
 } // namespace blink