ash: Use session_manager::SessionState

ash/common/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/common/system/overview/overview_button_tray.h"
 
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/shelf/shelf_constants.h"
 #include "ash/common/shelf/wm_shelf_util.h"
@@ skipping 59 matching lines @@
 
 bool OverviewButtonTray::PerformAction(const ui::Event& event) {
   WindowSelectorController* controller =
       WmShell::Get()->window_selector_controller();
   controller->ToggleOverview();
   SetDrawBackgroundAsActive(controller->IsSelecting());
   WmShell::Get()->RecordUserMetricsAction(UMA_TRAY_OVERVIEW);
   return true;
 }
 
-void OverviewButtonTray::SessionStateChanged(
-    SessionStateDelegate::SessionState state) {
+void OverviewButtonTray::SessionStateChanged(SessionState state) {
   UpdateIconVisibility();
 }
 
 void OverviewButtonTray::OnMaximizeModeStarted() {
   UpdateIconVisibility();
 }
 
 void OverviewButtonTray::OnMaximizeModeEnded() {
   UpdateIconVisibility();
 }
@@ skipping 45 matching lines @@
   // not change during transient times in which CanSelect is false. Such as when
   // a modal dialog is present.
   WmShell* shell = WmShell::Get();
   SessionStateDelegate* session_state_delegate =
       shell->GetSessionStateDelegate();
 
   SetVisible(
       shell->maximize_mode_controller()->IsMaximizeModeWindowManagerEnabled() &&
       session_state_delegate->IsActiveUserSessionStarted() &&
       !session_state_delegate->IsScreenLocked() &&
-      session_state_delegate->GetSessionState() ==
-          SessionStateDelegate::SESSION_STATE_ACTIVE &&
+      session_state_delegate->GetSessionState() == SessionState::ACTIVE &&
       shell->system_tray_delegate()->GetUserLoginStatus() !=
           LoginStatus::KIOSK_APP);
 }
 
 }  // namespace ash