IndexedDB: Use [Default] in IDLs to reduce overloads in implementations

Source/modules/indexeddb/IDBCursor.h

 /*
  * Copyright (C) 2010 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 50 matching lines @@
 
     // Implement the IDL
     const String& direction() const;
     const ScriptValue& key() const;
     const ScriptValue& primaryKey() const;
     const ScriptValue& value() const;
     IDBAny* source() const;
 
     PassRefPtr<IDBRequest> update(ScriptState*, ScriptValue&, ExceptionCode&);
     void advance(unsigned long, ExceptionCode&);
-    // FIXME: Try to modify the code generator so this overload is unneeded.
-    void continueFunction(ScriptExecutionContext*, ExceptionCode& ec) { continueFunction(static_cast<IDBKey*>(0), ec); }
     void continueFunction(ScriptExecutionContext*, const ScriptValue& key, ExceptionCode&);
     PassRefPtr<IDBRequest> deleteFunction(ScriptExecutionContext*, ExceptionCode&);
 
     void continueFunction(PassRefPtr<IDBKey>, ExceptionCode&);
     void postSuccessHandlerCallback();
     void close();
     void setValueReady(DOMRequestState*, PassRefPtr<IDBKey>, PassRefPtr<IDBKey> primaryKey, ScriptValue&);
     PassRefPtr<IDBKey> idbPrimaryKey() { return m_currentPrimaryKey; }
 
 protected:
@@ skipping 15 matching lines @@
     ScriptValue m_currentKeyValue;
     ScriptValue m_currentPrimaryKeyValue;
     RefPtr<IDBKey> m_currentKey;
     RefPtr<IDBKey> m_currentPrimaryKey;
     ScriptValue m_currentValue;
 };
 
 } // namespace WebCore
 
 #endif // IDBCursor_h