chromeos: Promotes more from WmShell to Shell

ash/common/shutdown_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 "ash/common/shutdown_controller.h"
 
 #include "ash/common/shell_delegate.h"
-#include "ash/common/wm_shell.h"
+#include "ash/shell.h"
 #include "base/sys_info.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/power_manager_client.h"
 
 namespace ash {
 
 ShutdownController::ShutdownController() {}
 
 ShutdownController::~ShutdownController() {}
 
 void ShutdownController::ShutDownOrReboot() {
   // For developers on Linux desktop just exit the app.
   if (!base::SysInfo::IsRunningOnChromeOS()) {
-    WmShell::Get()->delegate()->Exit();
+    Shell::Get()->shell_delegate()->Exit();
     return;
   }
 
   // On real Chrome OS hardware the power manager handles shutdown.
   using chromeos::DBusThreadManager;
   if (reboot_on_shutdown_)
     DBusThreadManager::Get()->GetPowerManagerClient()->RequestRestart();
   else
     DBusThreadManager::Get()->GetPowerManagerClient()->RequestShutdown();
 }
 
 void ShutdownController::SetRebootOnShutdown(bool reboot_on_shutdown) {
   reboot_on_shutdown_ = reboot_on_shutdown;
 }
 
 void ShutdownController::BindRequest(mojom::ShutdownControllerRequest request) {
   bindings_.AddBinding(this, std::move(request));
 }
 
 }  // namespace ash