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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_BROWSER_POWER_MONITOR_MESSAGE_BROADCASTER_H_
      6 #define CONTENT_BROWSER_POWER_MONITOR_MESSAGE_BROADCASTER_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/power_monitor/power_observer.h"
     10 #include "content/common/content_export.h"
     11 
     12 namespace IPC {
     13 class Sender;
     14 }
     15 
     16 namespace content {
     17 
     18 // A class used to monitor the power state change and communicate it to child
     19 // processes via IPC.
     20 class CONTENT_EXPORT PowerMonitorMessageBroadcaster
     21     : public base::PowerObserver {
     22  public:
     23   explicit PowerMonitorMessageBroadcaster(IPC::Sender* sender);
     24   virtual ~PowerMonitorMessageBroadcaster();
     25 
     26   // Implement PowerObserver.
     27   virtual void OnPowerStateChange(bool on_battery_power) OVERRIDE;
     28   virtual void OnSuspend() OVERRIDE;
     29   virtual void OnResume() OVERRIDE;
     30 
     31  private:
     32   IPC::Sender* sender_;
     33 
     34   DISALLOW_COPY_AND_ASSIGN(PowerMonitorMessageBroadcaster);
     35 };
     36 
     37 }  // namespace content
     38 
     39 #endif  // CONTENT_BROWSER_POWER_MONITOR_MESSAGE_BROADCASTER_H_
     40