mash: Introduce WmSystemTrayNotifier for //ash/common

chrome/browser/ui/ash/system_tray_delegate_chromeos.h

 // Copyright 2013 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 CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_CHROMEOS_H_
 #define CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_CHROMEOS_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 26 matching lines @@
 #include "components/user_manager/user_manager.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "device/bluetooth/bluetooth_adapter.h"
 #include "device/bluetooth/bluetooth_discovery_session.h"
 #include "extensions/browser/app_window/app_window_registry.h"
 #include "ui/base/ime/chromeos/input_method_manager.h"
 #include "ui/chromeos/ime/input_method_menu_manager.h"
 
 namespace ash {
+class WmSystemTrayNotifier;
 class VPNDelegate;
 }
 
 namespace user_manager {
 class User;
 }
 
 namespace chromeos {
 
 class SystemTrayDelegateChromeOS
@@ skipping 101 matching lines @@
 
   void UserChangedChildStatus(user_manager::User* user) override;
 
   // browser tests need to call ShouldUse24HourClock().
   bool GetShouldUse24HourClockForTesting() const;
 
   // chromeos::system::SystemClockObserver implementation.
   void OnSystemClockChanged(system::SystemClock*) override;
 
  private:
-
   ash::SystemTray* GetPrimarySystemTray();
 
   ash::SystemTrayNotifier* GetSystemTrayNotifier();
 
+  ash::WmSystemTrayNotifier* GetWmSystemTrayNotifier();
+
   void SetProfile(Profile* profile);
 
   bool UnsetProfile(Profile* profile);
 
   bool ShouldUse24HourClock() const;
 
   void UpdateShowLogoutButtonInTray();
 
   void UpdateLogoutDialogDuration();
 
@@ skipping 131 matching lines @@
 
   base::WeakPtrFactory<SystemTrayDelegateChromeOS> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayDelegateChromeOS);
 };
 
 ash::SystemTrayDelegate* CreateSystemTrayDelegate();
 
 }  // namespace chromeos
 #endif  // CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_CHROMEOS_H_