[Oilpan] Prepare full definition of classes before using Member

third_party/WebKit/Source/modules/webdatabase/Database.h

 /*
  * Copyright (C) 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 90 matching lines @@
     bool lastActionWasInsert();
     void resetDeletes();
     bool hadDeletes();
     void resetAuthorizer();
 
     Vector<String> tableNames();
     void scheduleTransactionCallback(SQLTransaction*);
     void closeImmediately();
     void closeDatabase();
 
-    DatabaseContext* databaseContext() const { return m_databaseContext.get(); }
+    DatabaseContext* databaseContext() const;
     ExecutionContext* executionContext() const;
 
 private:
     class DatabaseOpenTask;
     class DatabaseCloseTask;
     class DatabaseTransactionTask;
     class DatabaseTableNamesTask;
 
     Database(DatabaseContext*, const String& name, const String& expectedVersion, const String& displayName, unsigned long estimatedSize);
     bool performOpenAndVerify(bool setVersionInNewDatabase, DatabaseError&, String& errorMessage);
@@ skipping 54 matching lines @@
     friend class ChangeVersionWrapper;
     friend class DatabaseManager;
     friend class SQLStatementBackend;
     friend class SQLTransaction;
     friend class SQLTransactionBackend;
 };
 
 } // namespace blink
 
 #endif // Database_h