Add ash SessionStateDelegate

ash/system/date/tray_date.cc

 // Copyright (c) 2012 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/date/tray_date.h"
 
+#include "ash/session_state_delegate.h"
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "ash/system/date/date_view.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_item_view.h"
 #include "ash/system/tray/tray_popup_header_button.h"
 #include "base/i18n/time_formatting.h"
@@ skipping 65 matching lines @@
           IDR_AURA_UBER_TRAY_SHUTDOWN,
           IDR_AURA_UBER_TRAY_SHUTDOWN,
           IDR_AURA_UBER_TRAY_SHUTDOWN_HOVER,
           IDR_AURA_UBER_TRAY_SHUTDOWN_HOVER,
           IDS_ASH_STATUS_TRAY_SHUTDOWN);
       shutdown_->SetTooltipText(
           l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_SHUTDOWN));
       view->AddButton(shutdown_);
     }
 
-    if (ash::Shell::GetInstance()->CanLockScreen()) {
+    if (ash::Shell::GetInstance()->session_state_delegate()->CanLockScreen()) {
       lock_ = new ash::internal::TrayPopupHeaderButton(this,
           IDR_AURA_UBER_TRAY_LOCKSCREEN,
           IDR_AURA_UBER_TRAY_LOCKSCREEN,
           IDR_AURA_UBER_TRAY_LOCKSCREEN_HOVER,
           IDR_AURA_UBER_TRAY_LOCKSCREEN_HOVER,
           IDS_ASH_STATUS_TRAY_LOCK);
       lock_->SetTooltipText(
           l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_LOCK));
       view->AddButton(lock_);
     }
@@ skipping 96 matching lines @@
     time_tray_->UpdateTimeFormat();
 }
 
 void TrayDate::Refresh() {
   if (time_tray_)
     time_tray_->UpdateText();
 }
 
 }  // namespace internal
 }  // namespace ash