Revert 162140 - ash : Decouple power button controller and session state controller.

chrome/browser/chromeos/power/session_state_controller_delegate_chromeos.h

Index: chrome/browser/chromeos/power/session_state_controller_delegate_chromeos.h
===================================================================
--- chrome/browser/chromeos/power/session_state_controller_delegate_chromeos.h	(revision 162199)
+++ chrome/browser/chromeos/power/session_state_controller_delegate_chromeos.h	(working copy)
@@ -1,30 +0,0 @@
-// 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_SESSION_STATE_CONTROLLER_DELEGATE_CHROMEOS_H_
-#define CHROME_BROWSER_CHROMEOS_POWER_SESSION_STATE_CONTROLLER_DELEGATE_CHROMEOS_H_
-
-#include "ash/wm/session_state_controller.h"
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-
-namespace chromeos {
-
-class SessionStateControllerDelegateChromeos
-    : public ash::SessionStateControllerDelegate {
- public:
-  SessionStateControllerDelegateChromeos() {}
-  virtual ~SessionStateControllerDelegateChromeos() {}
-
- private:
-  // SessionStateControllerDelegate implementation.
-  virtual void RequestLockScreen() OVERRIDE;
-  virtual void RequestShutdown() OVERRIDE;
-
-  DISALLOW_COPY_AND_ASSIGN(SessionStateControllerDelegateChromeos);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_POWER_SESSION_STATE_CONTROLLER_DELEGATE_CHROMEOS_H_