chromeos: Remove PowerStateOverride.

chromeos/power/power_state_override.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 CHROMEOS_POWER_POWER_STATE_OVERRIDE_H_
-#define CHROMEOS_POWER_POWER_STATE_OVERRIDE_H_
-
-#include "base/basictypes.h"
-#include "base/memory/weak_ptr.h"
-#include "base/timer.h"
-#include "chromeos/chromeos_export.h"
-#include "chromeos/dbus/dbus_thread_manager_observer.h"
-
-namespace chromeos {
-
-class DBusThreadManager;
-
-// This class overrides the current power state on the machine, disabling
-// a set of power management features.
-class CHROMEOS_EXPORT PowerStateOverride
-    : public base::RefCountedThreadSafe<PowerStateOverride>,
-      public DBusThreadManagerObserver {
- public:
-  enum Mode {
-    // Blocks the screen from being dimmed or blanked due to user inactivity.
-    // Also implies BLOCK_SYSTEM_SUSPEND.
-    BLOCK_DISPLAY_SLEEP,
-
-    // Blocks the system from being suspended due to user inactivity.
-    BLOCK_SYSTEM_SUSPEND,
-  };
-
-  explicit PowerStateOverride(Mode mode);
-
-  // DBusThreadManagerObserver implementation:
-  virtual void OnDBusThreadManagerDestroying(DBusThreadManager* manager)
-      OVERRIDE;
-
- private:
-  friend class base::RefCountedThreadSafe<PowerStateOverride>;
-
-  // This destructor cancels the current power state override. There might be
-  // a very slight delay between the the last reference to an instance being
-  // released and the power state override being canceled. This is only in
-  // the case that the current instance has JUST been created and ChromeOS
-  // hasn't had a chance to service the initial power override request yet.
-  virtual ~PowerStateOverride();
-
-  // Callback from RequestPowerStateOverride which receives our request_id.
-  void SetRequestId(uint32 request_id);
-
-  // Actually make a call to power manager; we need this to be able to post a
-  // delayed task since we cannot call back into power manager from Heartbeat
-  // since the last request has just been completed at that point.
-  void CallRequestPowerStateOverrides();
-
-  // Asks the power manager to cancel |request_id_| and sets it to zero.
-  // Does nothing if it's already zero.
-  void CancelRequest();
-
-  // Bitmap containing requested override types from
-  // PowerManagerClient::PowerStateOverrideType.
-  uint32 override_types_;
-
-  // Outstanding override request ID, or 0 if there is no outstanding request.
-  uint32 request_id_;
-
-  // Periodically invokes CallRequestPowerStateOverrides() to refresh the
-  // override.
-  base::RepeatingTimer<PowerStateOverride> heartbeat_;
-
-  DBusThreadManager* dbus_thread_manager_;  // not owned
-
-  DISALLOW_COPY_AND_ASSIGN(PowerStateOverride);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_POWER_POWER_STATE_OVERRIDE_H_