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

ash/aura/key_event_watcher_aura.h

 // Copyright 2016 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_AURA_KEY_EVENT_WATCHER_AURA_H_
 #define ASH_AURA_KEY_EVENT_WATCHER_AURA_H_
 
 #include <map>
 
 #include "ash/ash_export.h"
-#include "ash/key_event_watcher.h"
+#include "ash/common/key_event_watcher.h"
 #include "ui/events/event_handler.h"
 
 namespace ui {
 class KeyEvent;
 }
 
 namespace ash {
 
 // An EventHandler based KeyEventWatcher implementation.
 class ASH_EXPORT KeyEventWatcherAura : public KeyEventWatcher,
                                        public ui::EventHandler {
  public:
   KeyEventWatcherAura();
   ~KeyEventWatcherAura() override;
 
   // ui::EventHandler:
   void OnKeyEvent(ui::KeyEvent* event) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(KeyEventWatcherAura);
 };
 
 }  // namespace ash
 
 #endif  // ASH_AURA_KEY_EVENT_WATCHER_AURA_H_