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

chrome/browser/ui/ash/launcher/arc_app_window_launcher_controller.cc

 // 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.
 #include "chrome/browser/ui/ash/launcher/arc_app_window_launcher_controller.h"
 
 #include <string>
 
 #include "ash/display/screen_orientation_controller_chromeos.h"
 #include "ash/public/cpp/window_properties.h"
 #include "ash/shared/app_types.h"
@@ skipping 660 matching lines @@
 
   ArcAppWindowLauncherItemController* controller = app_window->controller();
   if (controller)
     controller->RemoveWindow(app_window);
   app_window->ResetController();
   app_window_info->set_app_window(nullptr);
 }
 
 void ArcAppWindowLauncherController::SetOrientationLockForAppWindow(
     AppWindow* app_window) {
-  ash::WmWindow* window =
-      ash::WmWindow::Get(app_window->widget()->GetNativeWindow());
+  aura::Window* window = app_window->widget()->GetNativeWindow();
   if (!window)
     return;
   AppWindowInfo* info = GetAppWindowInfoForTask(app_window->task_id());
   arc::mojom::OrientationLock orientation_lock;
 
   ScreenOrientationController::LockCompletionBehavior lock_completion_behavior =
       ScreenOrientationController::LockCompletionBehavior::None;
   if (info->has_requested_orientation_lock()) {
     orientation_lock = info->requested_orientation_lock();
     lock_completion_behavior = info->lock_completion_behavior();
@@ skipping 21 matching lines @@
   const std::string arc_app_id = exo::ShellSurface::GetApplicationId(window);
   if (arc_app_id.empty())
     return -1;
 
   int task_id = -1;
   if (sscanf(arc_app_id.c_str(), "org.chromium.arc.%d", &task_id) != 1)
     return -1;
 
   return task_id;
 }