ash: Use mojo LocaleNotificationController interface.

ash/common/system/tray/system_tray_notifier.cc

 // 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.
 
 #include "ash/common/system/tray/system_tray_notifier.h"
 
 #include "ash/common/system/accessibility_observer.h"
 #include "ash/common/system/audio/audio_observer.h"
 #include "ash/common/system/date/clock_observer.h"
 #include "ash/common/system/ime/ime_observer.h"
@@ skipping 107 matching lines @@
 
 void SystemTrayNotifier::NotifyRefreshIME() {
   FOR_EACH_OBSERVER(IMEObserver, ime_observers_, OnIMERefresh());
 }
 
 void SystemTrayNotifier::NotifyRefreshIMEMenu(bool is_active) {
   FOR_EACH_OBSERVER(IMEObserver, ime_observers_,
                     OnIMEMenuActivationChanged(is_active));
 }
 
-void SystemTrayNotifier::AddLocaleObserver(LocaleObserver* observer) {
-  locale_observers_.AddObserver(observer);
-}
-
-void SystemTrayNotifier::RemoveLocaleObserver(LocaleObserver* observer) {
-  locale_observers_.RemoveObserver(observer);
-}
-
-void SystemTrayNotifier::NotifyLocaleChanged(LocaleObserver::Delegate* delegate,
-                                             const std::string& cur_locale,
-                                             const std::string& from_locale,
-                                             const std::string& to_locale) {
-  FOR_EACH_OBSERVER(
-      LocaleObserver, locale_observers_,
-      OnLocaleChanged(delegate, cur_locale, from_locale, to_locale));
-}
-
 void SystemTrayNotifier::AddUpdateObserver(UpdateObserver* observer) {
   update_observers_.AddObserver(observer);
 }
 
 void SystemTrayNotifier::RemoveUpdateObserver(UpdateObserver* observer) {
   update_observers_.RemoveObserver(observer);
 }
 
 void SystemTrayNotifier::NotifyUpdateRecommended(const UpdateInfo& info) {
   FOR_EACH_OBSERVER(UpdateObserver, update_observers_,
@@ skipping 219 matching lines @@
 
 void SystemTrayNotifier::NotifyVirtualKeyboardSuppressionChanged(
     bool suppressed) {
   FOR_EACH_OBSERVER(VirtualKeyboardObserver, virtual_keyboard_observers_,
                     OnKeyboardSuppressionChanged(suppressed));
 }
 
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace ash