[mus+ash] Removes WmWindow from ash/wm/window_cycle_*

ash/wm/window_cycle_list.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_WM_WINDOW_CYCLE_LIST_H_
 #define ASH_WM_WINDOW_CYCLE_LIST_H_
 
 #include <memory>
 #include <vector>
 
 #include "ash/ash_export.h"
 #include "ash/wm/window_cycle_controller.h"
 #include "base/macros.h"
 #include "base/scoped_observer.h"
 #include "base/timer/timer.h"
 #include "ui/aura/window_observer.h"
 #include "ui/display/display_observer.h"
 
+namespace aura {
+class Window;
+}
+
 namespace display {
 class Screen;
 }
 
 namespace views {
 class Widget;
 }
 
 namespace ash {
 
 class WindowCycleView;
 
 // Tracks a set of Windows that can be stepped through. This class is used by
 // the WindowCycleController.
 class ASH_EXPORT WindowCycleList : public aura::WindowObserver,
                                    public display::DisplayObserver {
  public:
-  using WindowList = std::vector<WmWindow*>;
+  using WindowList = std::vector<aura::Window*>;
 
   explicit WindowCycleList(const WindowList& windows);
   ~WindowCycleList() override;
 
   bool empty() const { return windows_.empty(); }
 
   // Cycles to the next or previous window based on |direction|.
   void Step(WindowCycleController::Direction direction);
 
   int current_index() const { return current_index_; }
@@ skipping 54 matching lines @@
 
   // A timer to delay showing the UI. Quick Alt+Tab should not flash a UI.
   base::OneShotTimer show_ui_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowCycleList);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_WINDOW_CYCLE_LIST_H_