mash: Shell ref clean up for screen lock

ash/session/session_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/session/session_controller.h"
 
 #include <algorithm>
 
 #include "ash/session/session_observer.h"
 #include "ash/shell.h"
+#include "ash/system/power/power_event_observer.h"
 #include "ash/wm/lock_state_controller.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "chromeos/chromeos_switches.h"
 #include "components/signin/core/account_id/account_id.h"
 #include "components/user_manager/user_type.h"
 #include "services/service_manager/public/cpp/connector.h"
 
 using session_manager::SessionState;
@@ skipping 218 matching lines @@
 
   LockStateController* const lock_state_controller =
       Shell::Get()->lock_state_controller();
 
   lock_state_controller->SetLockScreenDisplayedCallback(
       base::Bind(&SessionController::OnLockAnimationFinished,
                  weak_ptr_factory_.GetWeakPtr()));
   lock_state_controller->OnStartingLock();
 }
 
+void SessionController::NotifyChromeLockAnimationsComplete() {
+  Shell::Get()->power_event_observer()->OnLockAnimationsComplete();
+}
+
 void SessionController::RunUnlockAnimation(
     const RunUnlockAnimationCallback& callback) {
   is_unlocking_ = true;
 
   // Shell could have no instance in tests.
   if (Shell::HasInstance())
     Shell::Get()->lock_state_controller()->OnLockScreenHide(callback);
 }
 
 void SessionController::NotifyChromeTerminating() {
@@ skipping 111 matching lines @@
   for (auto& observer : observers_)
     observer.OnLoginStatusChanged(login_status_);
 }
 
 void SessionController::OnLockAnimationFinished() {
   if (!start_lock_callback_.is_null())
     std::move(start_lock_callback_).Run(true /* locked */);
 }
 
 }  // namespace ash