chromeos: More power-related cleanup.

chrome/browser/chromeos/power/resume_observer.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_RESUME_OBSERVER_H_
-#define CHROME_BROWSER_CHROMEOS_POWER_RESUME_OBSERVER_H_
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "chromeos/dbus/power_manager_client.h"
-
-namespace chromeos {
-
-// A class to observe system resume events and dispatch onWokeUp extension API
-// events.
-class ResumeObserver : public PowerManagerClient::Observer {
- public:
-  // This class registers/unregisters itself as an observer in ctor/dtor.
-  ResumeObserver();
-  virtual ~ResumeObserver();
-
-  // PowerManagerClient::Observer overrides:
-  virtual void SystemResumed(const base::TimeDelta& sleep_duration) OVERRIDE;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ResumeObserver);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_POWER_RESUME_OBSERVER_H_