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

ash/wm/overview/window_selector.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_OVERVIEW_WINDOW_SELECTOR_H_
 #define ASH_WM_OVERVIEW_WINDOW_SELECTOR_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <set>
 #include <vector>
 
 #include "ash/ash_export.h"
-#include "ash/wm_activation_observer.h"
+#include "ash/common/wm_activation_observer.h"
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "ui/aura/window_observer.h"
 #include "ui/display/display_observer.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/views/controls/textfield/textfield_controller.h"
 
 namespace views {
 class Textfield;
 class Widget;
@@ skipping 164 matching lines @@
   int text_filter_bottom_;
 
   bool is_shut_down_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(WindowSelector);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_OVERVIEW_WINDOW_SELECTOR_H_