Signin screen and locked screen status area focus advancing

ash/common/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_COMMON_SYSTEM_TRAY_SYSTEM_TRAY_NOTIFIER_H_
 #define ASH_COMMON_SYSTEM_TRAY_SYSTEM_TRAY_NOTIFIER_H_
 
 #include <string>
 
 #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"
 
 #if defined(OS_CHROMEOS)
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #endif
 
 namespace ash {
 
 class AccessibilityObserver;
 class AudioObserver;
 class ClockObserver;
 class IMEObserver;
+class StatusAreaFocusObserver;
 struct UpdateInfo;
 class UpdateObserver;
 class UserObserver;
 
 #if defined(OS_CHROMEOS)
 class BluetoothObserver;
 class EnterpriseDomainObserver;
 class LastWindowClosedObserver;
 class LogoutButtonObserver;
 class MediaCaptureObserver;
@@ skipping 42 matching lines @@
   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);
 
+  // Status area focus.
+  void AddStatusAreaFocusObserver(StatusAreaFocusObserver* observer);
+  void RemoveStatusAreaFocusObserver(StatusAreaFocusObserver* observer);
+  void NotifyWillReturnFocusToWebContents(bool reverse);
+
   // OS updates.
   void AddUpdateObserver(UpdateObserver* observer);
   void RemoveUpdateObserver(UpdateObserver* observer);
   void NotifyUpdateRecommended(const UpdateInfo& info);
 
   // User.
   void AddUserObserver(UserObserver* observer);
   void RemoveUserObserver(UserObserver* observer);
   void NotifyUserUpdate();
   void NotifyUserAddedToSession();
@@ skipping 68 matching lines @@
   void RemoveVirtualKeyboardObserver(VirtualKeyboardObserver* observer);
   void NotifyVirtualKeyboardSuppressionChanged(bool suppressed);
 #endif
 
  private:
   base::ObserverList<AccessibilityObserver> accessibility_observers_;
   base::ObserverList<AudioObserver> audio_observers_;
   base::ObserverList<ClockObserver> clock_observers_;
   base::ObserverList<IMEObserver> ime_observers_;
   base::ObserverList<LocaleObserver> locale_observers_;
+  base::ObserverList<StatusAreaFocusObserver> status_area_focus_observers_;
   base::ObserverList<UpdateObserver> update_observers_;
   base::ObserverList<UserObserver> user_observers_;
 
 #if defined(OS_CHROMEOS)
   base::ObserverList<BluetoothObserver> bluetooth_observers_;
   base::ObserverList<EnterpriseDomainObserver> enterprise_domain_observers_;
   base::ObserverList<LastWindowClosedObserver> last_window_closed_observers_;
   base::ObserverList<LogoutButtonObserver> logout_button_observers_;
   base::ObserverList<MediaCaptureObserver> media_capture_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<TracingObserver> tracing_observers_;
   base::ObserverList<VirtualKeyboardObserver> virtual_keyboard_observers_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayNotifier);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_TRAY_SYSTEM_TRAY_NOTIFIER_H_