chromeos: Move files in //ash/common to //ash, part 2

ash/common/wm/lock_state_observer.h

Index: ash/common/wm/lock_state_observer.h
diff --git a/ash/common/wm/lock_state_observer.h b/ash/common/wm/lock_state_observer.h
deleted file mode 100644
index a7d30fa0f6de8a40372a370e34b93b63278ab552..0000000000000000000000000000000000000000
--- a/ash/common/wm/lock_state_observer.h
+++ /dev/null
@@ -1,28 +0,0 @@
-// 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.
-
-#ifndef ASH_COMMON_WM_LOCK_STATE_OBSERVER_H_
-#define ASH_COMMON_WM_LOCK_STATE_OBSERVER_H_
-
-#include "ash/ash_export.h"
-
-namespace ash {
-
-// Interface for classes that want to be notified by LockStateController when
-// session-related events occur.
-class ASH_EXPORT LockStateObserver {
- public:
-  enum EventType {
-    EVENT_PRELOCK_ANIMATION_STARTED,
-    EVENT_LOCK_ANIMATION_STARTED,
-    EVENT_LOCK_ANIMATION_FINISHED,
-  };
-
-  virtual void OnLockStateEvent(EventType event) = 0;
-  virtual ~LockStateObserver() {}
-};
-
-}  // namespace ash
-
-#endif  // ASH_COMMON_WM_LOCK_STATE_OBSERVER_H_