Oilpan: Enable oilpan for callback classes

Source/modules/webdatabase/DatabaseManager.h

 /*
  * Copyright (C) 2012 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 45 matching lines @@
 #if ENABLE(ASSERT)
     void didConstructDatabaseContext();
     void didDestructDatabaseContext();
 #else
     void didConstructDatabaseContext() { }
     void didDestructDatabaseContext() { }
 #endif
 
     static void throwExceptionForDatabaseError(DatabaseError, const String& errorMessage, ExceptionState&);
 
-    PassRefPtrWillBeRawPtr<Database> openDatabase(ExecutionContext*, const String& name, const String& expectedVersion, const String& displayName, unsigned long estimatedSize, PassOwnPtrWillBeRawPtr<DatabaseCallback>, DatabaseError&, String& errorMessage);
+    PassRefPtrWillBeRawPtr<Database> openDatabase(ExecutionContext*, const String& name, const String& expectedVersion, const String& displayName, unsigned long estimatedSize, DatabaseCallback*, DatabaseError&, String& errorMessage);
 
     String fullPathForDatabase(SecurityOrigin*, const String& name, bool createIfDoesNotExist = true);
 
 private:
     DatabaseManager();
     ~DatabaseManager();
 
     // This gets a DatabaseContext for the specified ExecutionContext.
     // If one doesn't already exist, it will create a new one.
     DatabaseContext* databaseContextFor(ExecutionContext*);
@@ skipping 11 matching lines @@
     ContextMap m_contextMap;
 #if ENABLE(ASSERT)
     int m_databaseContextRegisteredCount;
     int m_databaseContextInstanceCount;
 #endif
 };
 
 } // namespace blink
 
 #endif // DatabaseManager_h