chromeos: Notify power manager about user activity.

chrome/browser/chromeos/power/user_activity_notifier.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 CHROME_BROWSER_CHROMEOS_POWER_USER_ACTIVITY_NOTIFIER_H_
+#define CHROME_BROWSER_CHROMEOS_POWER_USER_ACTIVITY_NOTIFIER_H_
+#pragma once
+
+#include "ash/wm/user_activity_detector.h"
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/time.h"
+
+namespace chromeos {
+
+// Notifies the power manager when the user is active.
+class UserActivityNotifier : public ash::UserActivityObserver {
+ public:
+  UserActivityNotifier();
+  virtual ~UserActivityNotifier();
+
+  // ash::UserActivityObserver implementation.
+  virtual void OnUserActivity() OVERRIDE;
+
+ private:
+  // Last time that the power manager was notified.
+  base::TimeTicks last_notify_time_;
+
+  DISALLOW_COPY_AND_ASSIGN(UserActivityNotifier);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_POWER_USER_ACTIVITY_NOTIFIER_H_