ash: Cleanup class/struct forward declarations

ash/wm/lock_state_controller.h

 // 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_WM_LOCK_STATE_CONTROLLER_H_
 #define ASH_WM_LOCK_STATE_CONTROLLER_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
 #include "ash/common/shell_observer.h"
 #include "ash/wm/session_state_animator.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "base/timer/elapsed_timer.h"
 #include "base/timer/timer.h"
 #include "ui/aura/window_tree_host_observer.h"
 
-namespace gfx {
-class Rect;
-class Size;
-}
-
-namespace ui {
-class Layer;
-}
-
 namespace ash {
 
 class ShutdownController;
 
 namespace test {
 class LockStateControllerTest;
 class LockStateControllerTestApi;
 }
 
 // Displays onscreen animations and locks or suspends the system in response to
@@ skipping 224 matching lines @@
   base::Closure lock_screen_displayed_callback_;
 
   base::WeakPtrFactory<LockStateController> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(LockStateController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_LOCK_STATE_CONTROLLER_H_