Revert "chromeos: Move files in //ash/common to //ash, part 3"

ash/system/virtual_keyboard/virtual_keyboard_tray.h

 // Copyright 2014 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_SYSTEM_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_TRAY_H_
 #define ASH_SYSTEM_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_TRAY_H_
 
-#include "ash/keyboard/keyboard_ui_observer.h"
+#include "ash/common/keyboard/keyboard_ui_observer.h"
 #include "ash/system/tray/tray_background_view.h"
 #include "base/macros.h"
 #include "ui/keyboard/keyboard_controller_observer.h"
 
 namespace views {
 class ImageView;
 }
 
 namespace ash {
 
@@ skipping 31 matching lines @@
   views::ImageView* icon_;
 
   WmShelf* wm_shelf_;
 
   DISALLOW_COPY_AND_ASSIGN(VirtualKeyboardTray);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_TRAY_H_