[mus+ash] Removes WmWindow from ash/wm/mru_window_tracker and overview mode

ash/system/overview/overview_button_tray.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/system/overview/overview_button_tray.h"
 
 #include "ash/resources/vector_icons/vector_icons.h"
 #include "ash/session/session_controller.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shell.h"
 #include "ash/shell_port.h"
 #include "ash/strings/grit/ash_strings.h"
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_container.h"
 #include "ash/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/wm/mru_window_tracker.h"
 #include "ash/wm/overview/window_selector_controller.h"
-#include "ash/wm_window.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/paint_vector_icon.h"
 #include "ui/views/border.h"
 #include "ui/views/controls/image_view.h"
 #include "ui/wm/core/window_util.h"
 
 namespace ash {
 
 OverviewButtonTray::OverviewButtonTray(WmShelf* wm_shelf)
     : TrayBackgroundView(wm_shelf),
@@ skipping 34 matching lines @@
       if (!Shell::Get()->window_selector_controller()->IsSelecting())
         return true;
 
       MruWindowTracker::WindowList mru_window_list =
           Shell::Get()->mru_window_tracker()->BuildMruWindowList();
 
       // Switch to the second most recently used window (most recent is the
       // current window), if it exists.
       if (mru_window_list.size() > 1) {
         AnimateInkDrop(views::InkDropState::DEACTIVATED, nullptr);
-        ::wm::ActivateWindow(WmWindow::GetAuraWindow(mru_window_list[1]));
+        ::wm::ActivateWindow(mru_window_list[1]);
         return true;
       }
     }
   }
 
   WindowSelectorController* controller =
       Shell::Get()->window_selector_controller();
   // Note: Toggling overview mode will fail if there is no window to show, the
   // screen is locked, a modal dialog is open or is running in kiosk app
   // session.
@@ skipping 45 matching lines @@
   SetVisible(
       shell->maximize_mode_controller()->IsMaximizeModeWindowManagerEnabled() &&
       session_controller->IsActiveUserSessionStarted() &&
       !session_controller->IsScreenLocked() &&
       session_controller->GetSessionState() ==
           session_manager::SessionState::ACTIVE &&
       !session_controller->IsKioskSession());
 }
 
 }  // namespace ash