Add countdown when session time is limited

ash/system/tray/system_tray_notifier.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/tray/system_tray_notifier.h"
 
 namespace ash {
 
 SystemTrayNotifier::SystemTrayNotifier() {
 }
@@ skipping 89 matching lines @@
 void SystemTrayNotifier::AddPowerStatusObserver(
     PowerStatusObserver* observer) {
   power_status_observers_.AddObserver(observer);
 }
 
 void SystemTrayNotifier::RemovePowerStatusObserver(
     PowerStatusObserver* observer) {
   power_status_observers_.RemoveObserver(observer);
 }
 
+void SystemTrayNotifier::AddSessionLengthLimitObserver(
+    SessionLengthLimitObserver* observer) {
+  session_length_limit_observers_.AddObserver(observer);
+}
+
+void SystemTrayNotifier::RemoveSessionLengthLimitObserver(
+    SessionLengthLimitObserver* observer) {
+  session_length_limit_observers_.RemoveObserver(observer);
+}
+
 void SystemTrayNotifier::AddUpdateObserver(UpdateObserver* observer) {
   update_observers_.AddObserver(observer);
 }
 
 void SystemTrayNotifier::RemoveUpdateObserver(UpdateObserver* observer) {
   update_observers_.RemoveObserver(observer);
 }
 
 void SystemTrayNotifier::AddUserObserver(UserObserver* observer) {
   user_observers_.AddObserver(observer);
@@ skipping 116 matching lines @@
       OnLocaleChanged(delegate, cur_locale, from_locale, to_locale));
 }
 
 void SystemTrayNotifier::NotifyPowerStatusChanged(
     const PowerSupplyStatus& power_status) {
   FOR_EACH_OBSERVER(PowerStatusObserver,
                     power_status_observers_,
                     OnPowerStatusChanged(power_status));
 }
 
+void SystemTrayNotifier::NotifySessionStartTimeChanged(
+    const base::Time& session_start_time) {
+  FOR_EACH_OBSERVER(SessionLengthLimitObserver,
+                    session_length_limit_observers_,
+                    OnSessionStartTimeChanged(session_start_time));
+}
+
+void SystemTrayNotifier::NotifySessionLengthLimitChanged(
+    const base::TimeDelta& limit) {
+  FOR_EACH_OBSERVER(SessionLengthLimitObserver,
+                    session_length_limit_observers_,
+                    OnSessionLengthLimitChanged(limit));
+}
+
 void SystemTrayNotifier::NotifyUpdateRecommended(
     UpdateObserver::UpdateSeverity severity) {
   FOR_EACH_OBSERVER(UpdateObserver,
                     update_observers_,
                     OnUpdateRecommended(severity));
 }
 
 void SystemTrayNotifier::NotifyUserUpdate() {
   FOR_EACH_OBSERVER(UserObserver,
                     user_observers_,
@@ skipping 46 matching lines @@
 }
 
 void SystemTrayNotifier::NotifyAddSmsMessage(
     const base::DictionaryValue& message) {
   FOR_EACH_OBSERVER(SmsObserver, sms_observers_, AddMessage(message));
 }
 
 #endif  // OS_CHROMEOS
 
 }  // namespace ash