mash: Migrate tray date view to //ash/common types

ash/common/system/tray/wm_system_tray_notifier.cc

Index: ash/common/system/tray/wm_system_tray_notifier.cc
diff --git a/ash/common/system/tray/wm_system_tray_notifier.cc b/ash/common/system/tray/wm_system_tray_notifier.cc
index 2137e92628f5030d40591ffbac14e1859c91824e..50d4566688b1edc04c733b72a2e845ec22e497f8 100644
--- a/ash/common/system/tray/wm_system_tray_notifier.cc
+++ b/ash/common/system/tray/wm_system_tray_notifier.cc
@@ -4,6 +4,7 @@
 
 #include "ash/common/system/tray/wm_system_tray_notifier.h"
 
+#include "ash/common/system/date/clock_observer.h"
 #include "ash/common/system/update/update_observer.h"
 
 namespace ash {
@@ -12,6 +13,14 @@ WmSystemTrayNotifier::WmSystemTrayNotifier() {}
 
 WmSystemTrayNotifier::~WmSystemTrayNotifier() {}
 
+void WmSystemTrayNotifier::AddClockObserver(ClockObserver* observer) {
+  clock_observers_.AddObserver(observer);
+}
+
+void WmSystemTrayNotifier::RemoveClockObserver(ClockObserver* observer) {
+  clock_observers_.RemoveObserver(observer);
+}
+
 void WmSystemTrayNotifier::AddUpdateObserver(UpdateObserver* observer) {
   update_observers_.AddObserver(observer);
 }
@@ -20,6 +29,25 @@ void WmSystemTrayNotifier::RemoveUpdateObserver(UpdateObserver* observer) {
   update_observers_.RemoveObserver(observer);
 }
 
+void WmSystemTrayNotifier::NotifyRefreshClock() {
+  FOR_EACH_OBSERVER(ClockObserver, clock_observers_, Refresh());
+}
+
+void WmSystemTrayNotifier::NotifyDateFormatChanged() {
+  FOR_EACH_OBSERVER(ClockObserver, clock_observers_, OnDateFormatChanged());
+}
+
+void WmSystemTrayNotifier::NotifySystemClockTimeUpdated() {
+  FOR_EACH_OBSERVER(ClockObserver, clock_observers_,
+                    OnSystemClockTimeUpdated());
+}
+
+void WmSystemTrayNotifier::NotifySystemClockCanSetTimeChanged(
+    bool can_set_time) {
+  FOR_EACH_OBSERVER(ClockObserver, clock_observers_,
+                    OnSystemClockCanSetTimeChanged(can_set_time));
+}
+
 void WmSystemTrayNotifier::NotifyUpdateRecommended(const UpdateInfo& info) {
   FOR_EACH_OBSERVER(UpdateObserver, update_observers_,
                     OnUpdateRecommended(info));