#ifndef BASE_MESSAGE_LOOP_MESSAGE_PUMP_DEFAULT_H_
#define BASE_MESSAGE_LOOP_MESSAGE_PUMP_DEFAULT_H_
+#include "base/base_export.h"
#include "base/message_loop/message_pump.h"
#include "base/synchronization/waitable_event.h"
#include "base/time/time.h"
namespace base {
-class MessagePumpDefault : public MessagePump {
+class BASE_EXPORT MessagePumpDefault : public MessagePump {
public:
MessagePumpDefault();
virtual ~MessagePumpDefault();