mash: Migrate locale observer and notification to common.

ash/common/system/tray/wm_system_tray_notifier.h

 // Copyright 2016 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.
 
 #ifndef ASH_COMMON_SYSTEM_TRAY_WM_SYSTEM_TRAY_NOTIFIER_H_
 #define ASH_COMMON_SYSTEM_TRAY_WM_SYSTEM_TRAY_NOTIFIER_H_
 
 #include "ash/ash_export.h"
 #include "ash/common/accessibility_types.h"
+#include "ash/common/system/locale/locale_observer.h"
 #include "base/macros.h"
 #include "base/observer_list.h"
 
 namespace ash {
 
 class AccessibilityObserver;
 class ClockObserver;
 class IMEObserver;
 struct UpdateInfo;
 class UpdateObserver;
@@ skipping 25 matching lines @@
   void NotifyDateFormatChanged();
   void NotifySystemClockTimeUpdated();
   void NotifySystemClockCanSetTimeChanged(bool can_set_time);
 
   // Input methods.
   void AddIMEObserver(IMEObserver* observer);
   void RemoveIMEObserver(IMEObserver* observer);
   void NotifyRefreshIME();
   void NotifyRefreshIMEMenu(bool is_active);
 
+  // Locale.
+  void AddLocaleObserver(LocaleObserver* observer);
+  void RemoveLocaleObserver(LocaleObserver* observer);
+  void NotifyLocaleChanged(LocaleObserver::Delegate* delegate,
+                           const std::string& cur_locale,
+                           const std::string& from_locale,
+                           const std::string& to_locale);
+
   // OS updates.
   void AddUpdateObserver(UpdateObserver* observer);
   void RemoveUpdateObserver(UpdateObserver* observer);
   void NotifyUpdateRecommended(const UpdateInfo& info);
 
 #if defined(OS_CHROMEOS)
   // Virtual keyboard.
   void AddVirtualKeyboardObserver(VirtualKeyboardObserver* observer);
   void RemoveVirtualKeyboardObserver(VirtualKeyboardObserver* observer);
   void NotifyVirtualKeyboardSuppressionChanged(bool suppressed);
 #endif
 
  private:
   base::ObserverList<AccessibilityObserver> accessibility_observers_;
+  base::ObserverList<ClockObserver> clock_observers_;

[James Cook, 2016/06/22 02:53:29]

thanks for fixing this ordering

   base::ObserverList<IMEObserver> ime_observers_;
-  base::ObserverList<ClockObserver> clock_observers_;
+  base::ObserverList<LocaleObserver> locale_observers_;
   base::ObserverList<UpdateObserver> update_observers_;
 
 #if defined(OS_CHROMEOS)
   base::ObserverList<VirtualKeyboardObserver> virtual_keyboard_observers_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(WmSystemTrayNotifier);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_TRAY_WM_SYSTEM_TRAY_NOTIFIER_H_