Move message_pump to base/message_loop.

base/message_pump_default.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_MESSAGE_PUMP_DEFAULT_H_
-#define BASE_MESSAGE_PUMP_DEFAULT_H_
-
-#include "base/message_pump.h"
-#include "base/time.h"
-#include "base/synchronization/waitable_event.h"
-
-namespace base {
-
-class MessagePumpDefault : public MessagePump {
- public:
-  MessagePumpDefault();
-
-  // MessagePump methods:
-  virtual void Run(Delegate* delegate) OVERRIDE;
-  virtual void Quit() OVERRIDE;
-  virtual void ScheduleWork() OVERRIDE;
-  virtual void ScheduleDelayedWork(const TimeTicks& delayed_work_time) OVERRIDE;
-
- protected:
-  virtual ~MessagePumpDefault() {}
-
- private:
-  // This flag is set to false when Run should return.
-  bool keep_running_;
-
-  // Used to sleep until there is more work to do.
-  WaitableEvent event_;
-
-  // The time at which we should call DoDelayedWork.
-  TimeTicks delayed_work_time_;
-
-  DISALLOW_COPY_AND_ASSIGN(MessagePumpDefault);
-};
-
-}  // namespace base
-
-#endif  // BASE_MESSAGE_PUMP_DEFAULT_H_