Convert Pass()→std::move() in //ash (CrOS edition)

ash/system/chromeos/session/tray_session_length_limit.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/system/chromeos/session/tray_session_length_limit.h"
 
 #include <algorithm>
+#include <utility>
 
 #include "ash/shell.h"
 #include "ash/system/chromeos/label_tray_view.h"
 #include "ash/system/system_notifier.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 "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "grit/ash_resources.h"
@@ skipping 136 matching lines @@
           ComposeNotificationMessage() /* message */,
           bundle.GetImageNamed(
               IDR_AURA_UBER_TRAY_NOTIFICATION_SESSION_LENGTH_LIMIT),
           base::string16() /* display_source */, GURL(),
           message_center::NotifierId(
               message_center::NotifierId::SYSTEM_COMPONENT,
               system_notifier::kNotifierSessionLengthTimeout),
           data, NULL /* delegate */));
   notification->SetSystemPriority();
   if (message_center->FindVisibleNotificationById(kNotificationId))
-    message_center->UpdateNotification(kNotificationId, notification.Pass());
+    message_center->UpdateNotification(kNotificationId,
+                                       std::move(notification));
   else
-    message_center->AddNotification(notification.Pass());
+    message_center->AddNotification(std::move(notification));
   last_limit_state_ = limit_state_;
 }
 
 void TraySessionLengthLimit::UpdateTrayBubbleView() const {
   if (!tray_bubble_view_)
     return;
   if (limit_state_ == LIMIT_NONE)
     tray_bubble_view_->SetMessage(base::string16());
   else
     tray_bubble_view_->SetMessage(ComposeTrayBubbleMessage());
@@ skipping 12 matching lines @@
 base::string16 TraySessionLengthLimit::ComposeTrayBubbleMessage() const {
   return l10n_util::GetStringFUTF16(
       IDS_ASH_STATUS_TRAY_BUBBLE_SESSION_LENGTH_LIMIT,
       ui::TimeFormat::Detailed(ui::TimeFormat::FORMAT_DURATION,
                                ui::TimeFormat::LENGTH_LONG,
                                10,
                                remaining_session_time_));
 }
 
 }  // namespace ash