[oilpan] Move IDBDatabase, IDBDatabaseCallbacks, IDBDatabaseBackendInterface and other related clas…

Source/WebKit/chromium/src/IDBDatabaseCallbacksProxy.h

 /*
  * Copyright (C) 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 17 matching lines @@
 
 #include "modules/indexeddb/IDBDatabaseCallbacks.h"
 #include <wtf/PassOwnPtr.h>
 
 namespace WebKit {
 
 class WebIDBDatabaseCallbacks;
 
 class IDBDatabaseCallbacksProxy : public WebCore::IDBDatabaseCallbacks {
 public:
-    static PassRefPtr<IDBDatabaseCallbacksProxy> create(PassOwnPtr<WebIDBDatabaseCallbacks>);
+    static IDBDatabaseCallbacksProxy* create(PassOwnPtr<WebIDBDatabaseCallbacks>);
     virtual ~IDBDatabaseCallbacksProxy();
 
     virtual void onForcedClose();
     virtual void onVersionChange(int64_t oldVersion, int64_t newVersion);
 
     virtual void onAbort(int64_t transactionId, PassRefPtr<WebCore::IDBDatabaseError>);
     virtual void onComplete(int64_t transactionId);
 
+    virtual void trace(WebCore::Visitor*) OVERRIDE { }
+
 private:
     IDBDatabaseCallbacksProxy(PassOwnPtr<WebIDBDatabaseCallbacks>);
 
     OwnPtr<WebIDBDatabaseCallbacks> m_callbacks;
 };
 
 } // namespace WebKit
 
 #endif // IDBDatabaseCallbacksProxy_h