|  | // Copyright 2013 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. | 
|  |  | 
|  | #include "content/browser/power_monitor_message_broadcaster.h" | 
|  |  | 
|  | #include "base/power_monitor/power_monitor.h" | 
|  | #include "content/common/power_monitor_messages.h" | 
|  | #include "ipc/ipc_sender.h" | 
|  |  | 
|  | namespace content { | 
|  |  | 
|  | PowerMonitorMessageBroadcaster::PowerMonitorMessageBroadcaster( | 
|  | IPC::Sender* sender) | 
|  | : sender_(sender) { | 
|  | base::PowerMonitor* power_monitor = base::PowerMonitor::Get(); | 
|  | if (power_monitor) | 
|  | power_monitor->AddObserver(this); | 
|  | } | 
|  |  | 
|  | PowerMonitorMessageBroadcaster::~PowerMonitorMessageBroadcaster() { | 
|  | base::PowerMonitor* power_monitor = base::PowerMonitor::Get(); | 
|  | if (power_monitor) | 
|  | power_monitor->RemoveObserver(this); | 
|  | } | 
|  |  | 
|  | void PowerMonitorMessageBroadcaster::Init() { | 
|  | base::PowerMonitor* power_monitor = base::PowerMonitor::Get(); | 
|  | // Unit tests does not initialize the PowerMonitor. | 
|  | if (power_monitor) | 
|  | OnPowerStateChange(power_monitor->IsOnBatteryPower()); | 
|  | } | 
|  |  | 
|  | void PowerMonitorMessageBroadcaster::OnPowerStateChange(bool on_battery_power) { | 
|  | sender_->Send(new PowerMonitorMsg_PowerStateChange(on_battery_power)); | 
|  | } | 
|  |  | 
|  | void PowerMonitorMessageBroadcaster::OnSuspend() { | 
|  | sender_->Send(new PowerMonitorMsg_Suspend()); | 
|  | } | 
|  |  | 
|  | void PowerMonitorMessageBroadcaster::OnResume() { | 
|  | sender_->Send(new PowerMonitorMsg_Resume()); | 
|  | } | 
|  |  | 
|  | }  // namespace content |