Adds WmWindow and converts WindowState to use it

ash/wm/window_cycle_controller_unittest.cc

 // 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.
 
 #include "ash/wm/window_cycle_controller.h"
 
 #include <algorithm>
 #include <memory>
 
 #include "ash/session/session_state_delegate.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_widget.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/shelf_test_api.h"
 #include "ash/test/shelf_view_test_api.h"
 #include "ash/test/test_shelf_delegate.h"
 #include "ash/test/test_shell_delegate.h"
 #include "ash/wm/window_cycle_list.h"
 #include "ash/wm/window_state.h"
+#include "ash/wm/window_state_aura.h"
 #include "ash/wm/window_util.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/env.h"
 #include "ui/aura/test/test_windows.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/screen.h"
 
@@ skipping 552 matching lines @@
   // Panel 1 is the next item as the MRU panel, removing it should make panel 2
   // the next window to be selected.
   panel0.reset();
   // Cycling again should now select panel1.
   controller->HandleCycleWindow(WindowCycleController::FORWARD);
   controller->StopCycling();
   EXPECT_TRUE(wm::IsActiveWindow(panel1.get()));
 }
 
 }  // namespace ash