Update modules classes to use OVERRIDE / FINAL when needed

Source/modules/webdatabase/DatabaseManager.cpp

 /*
  * 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 51 matching lines @@
 DatabaseManager::DatabaseManager()
 #if !ASSERT_DISABLED
     : m_databaseContextRegisteredCount(0)
     , m_databaseContextInstanceCount(0)
 #endif
 {
     m_server = new DatabaseServer;
     ASSERT(m_server); // We should always have a server to work with.
 }
 
-class DatabaseCreationCallbackTask : public ExecutionContextTask {
+class DatabaseCreationCallbackTask FINAL : public ExecutionContextTask {
 public:
     static PassOwnPtr<DatabaseCreationCallbackTask> create(PassRefPtr<Database> database, PassOwnPtr<DatabaseCallback> creationCallback)
     {
         return adoptPtr(new DatabaseCreationCallbackTask(database, creationCallback));
     }
 
-    virtual void performTask(ExecutionContext*)
+    virtual void performTask(ExecutionContext*) OVERRIDE
     {
         m_creationCallback->handleEvent(m_database.get());
     }
 
 private:
     DatabaseCreationCallbackTask(PassRefPtr<Database> database, PassOwnPtr<DatabaseCallback> callback)
         : m_database(database)
         , m_creationCallback(callback)
     {
     }
@@ skipping 208 matching lines @@
     if (databaseContext)
         m_server->interruptAllDatabasesForContext(databaseContext->backend().get());
 }
 
 void DatabaseManager::logErrorMessage(ExecutionContext* context, const String& message)
 {
     context->addConsoleMessage(StorageMessageSource, ErrorMessageLevel, message);
 }
 
 } // namespace WebCore