Revert of [Oilpan] Prepare full definition of classes before using Member

third_party/WebKit/Source/modules/webdatabase/DatabaseThread.cpp

 /*
  * Copyright (C) 2007, 2008, 2013 Apple 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 134 matching lines @@
 }
 
 bool DatabaseThread::isDatabaseOpen(Database* database)
 {
     ASSERT(isDatabaseThread());
     ASSERT(database);
     MutexLocker lock(m_terminationRequestedMutex);
     return !m_terminationRequested && m_openDatabaseSet.contains(database);
 }
 
-SQLTransactionCoordinator* DatabaseThread::transactionCoordinator() const
-{
-    return m_transactionCoordinator.get();
-}
-
 void DatabaseThread::scheduleTask(PassOwnPtr<DatabaseTask> task)
 {
     ASSERT(m_thread);
     ASSERT(!terminationRequested());
     // WebThread takes ownership of the task.
     m_thread->postTask(BLINK_FROM_HERE, new Task(threadSafeBind(&DatabaseTask::run, task)));
 }
 
 } // namespace blink