bool History::isSameAsCurrentState(SerializedScriptValue* state) const { return state == stateInternal().get(); }
PassRefPtr<SerializedScriptValue> History::state() { m_lastStateObjectRequested = stateInternal(); return m_lastStateObjectRequested; }
bool History::stateChanged() const { return m_lastStateObjectRequested != stateInternal(); }
SerializedScriptValue* History::state() { m_lastStateObjectRequested = stateInternal(); return m_lastStateObjectRequested.get(); }