chromeos: Make ash system tray directly observe IME state changes

ash/system/tray/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_SYSTEM_TRAY_SYSTEM_TRAY_NOTIFIER_H_
 #define ASH_SYSTEM_TRAY_SYSTEM_TRAY_NOTIFIER_H_
 
 #include <string>
 
 #include "ash/accessibility_types.h"
 #include "ash/ash_export.h"
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 
 namespace ash {
 
 class AccessibilityObserver;
 class BluetoothObserver;
 class ClockObserver;
 class EnterpriseDomainObserver;
-class IMEObserver;
 class LastWindowClosedObserver;
 class LogoutButtonObserver;
 class NetworkObserver;
 class NetworkPortalDetectorObserver;
 class ScreenCaptureObserver;
 class ScreenShareObserver;
 class SessionLengthLimitObserver;
 class StatusAreaFocusObserver;
 class TracingObserver;
 class VirtualKeyboardObserver;
@@ skipping 26 matching lines @@
   void NotifyRefreshClock();
   void NotifyDateFormatChanged();
   void NotifySystemClockTimeUpdated();
   void NotifySystemClockCanSetTimeChanged(bool can_set_time);
 
   // Enterprise domain.
   void AddEnterpriseDomainObserver(EnterpriseDomainObserver* observer);
   void RemoveEnterpriseDomainObserver(EnterpriseDomainObserver* observer);
   void NotifyEnterpriseDomainChanged();
 
-  // Input methods.
-  void AddIMEObserver(IMEObserver* observer);
-  void RemoveIMEObserver(IMEObserver* observer);
-  void NotifyRefreshIME();
-  void NotifyRefreshIMEMenu(bool is_active);
-
   // Last window closed.
   void AddLastWindowClosedObserver(LastWindowClosedObserver* observer);
   void RemoveLastWindowClosedObserver(LastWindowClosedObserver* observer);
   void NotifyLastWindowClosed();
 
   // Logout button.
   void AddLogoutButtonObserver(LogoutButtonObserver* observer);
   void RemoveLogoutButtonObserver(LogoutButtonObserver* observer);
   void NotifyShowLoginButtonChanged(bool show_login_button);
   void NotifyLogoutDialogDurationChanged(base::TimeDelta duration);
@@ skipping 43 matching lines @@
   // Virtual keyboard.
   void AddVirtualKeyboardObserver(VirtualKeyboardObserver* observer);
   void RemoveVirtualKeyboardObserver(VirtualKeyboardObserver* observer);
   void NotifyVirtualKeyboardSuppressionChanged(bool suppressed);
 
  private:
   base::ObserverList<AccessibilityObserver> accessibility_observers_;
   base::ObserverList<BluetoothObserver> bluetooth_observers_;
   base::ObserverList<ClockObserver> clock_observers_;
   base::ObserverList<EnterpriseDomainObserver> enterprise_domain_observers_;
-  base::ObserverList<IMEObserver> ime_observers_;
   base::ObserverList<LastWindowClosedObserver> last_window_closed_observers_;
   base::ObserverList<LogoutButtonObserver> logout_button_observers_;
   base::ObserverList<NetworkObserver> network_observers_;
   base::ObserverList<NetworkPortalDetectorObserver>
       network_portal_detector_observers_;
   base::ObserverList<ScreenCaptureObserver> screen_capture_observers_;
   base::ObserverList<ScreenShareObserver> screen_share_observers_;
   base::ObserverList<SessionLengthLimitObserver>
       session_length_limit_observers_;
   base::ObserverList<StatusAreaFocusObserver> status_area_focus_observers_;
   base::ObserverList<TracingObserver> tracing_observers_;
   base::ObserverList<VirtualKeyboardObserver> virtual_keyboard_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayNotifier);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_NOTIFIER_H_