Implement WebThreadSupportingGC, which wraps a WebThread attached to Oilpan's GC

Source/modules/webdatabase/DatabaseThread.h

 /*
  * Copyright (C) 2007, 2008 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 10 matching lines @@
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #ifndef DatabaseThread_h
 #define DatabaseThread_h
 
+#include "platform/WebThreadSupportingGC.h"
 #include "platform/heap/Handle.h"
-#include "public/platform/WebThread.h"
 #include "wtf/Deque.h"
 #include "wtf/HashMap.h"
 #include "wtf/HashSet.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 #include "wtf/ThreadSafeRefCounted.h"
 #include "wtf/ThreadingPrimitives.h"
 
@@ skipping 29 matching lines @@
     SQLTransactionClient* transactionClient() { return m_transactionClient.get(); }
     SQLTransactionCoordinator* transactionCoordinator() { return m_transactionCoordinator.get(); }
 
 private:
     DatabaseThread();
 
     void setupDatabaseThread();
     void cleanupDatabaseThread();
     void cleanupDatabaseThreadCompleted();
 
-    OwnPtr<WebThread> m_thread;
+    OwnPtr<WebThreadSupportingGC> m_thread;
 
     // This set keeps track of the open databases that have been used on this thread.
     // This must be updated in the database thread though it is constructed and
     // destructed in the context thread.
     WillBeHeapHashSet<RefPtrWillBeMember<DatabaseBackend> > m_openDatabaseSet;
 
     OwnPtr<SQLTransactionClient> m_transactionClient;
     OwnPtrWillBeMember<SQLTransactionCoordinator> m_transactionCoordinator;
     TaskSynchronizer* m_cleanupSync;
 
     mutable Mutex m_terminationRequestedMutex;
     bool m_terminationRequested;
-    OwnPtr<PendingGCRunner> m_pendingGCRunner;
-    OwnPtr<MessageLoopInterruptor> m_messageLoopInterruptor;
 };
 
 } // namespace blink
 
 #endif // DatabaseThread_h