Remove non-MD code from LabelTrayView

ash/common/system/chromeos/supervised/tray_supervised_user.h

 // Copyright 2014 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_CHROMEOS_SUPERVISED_TRAY_SUPERVISED_USER_H_
 #define ASH_COMMON_SYSTEM_CHROMEOS_SUPERVISED_TRAY_SUPERVISED_USER_H_
 
 #include "ash/ash_export.h"
 #include "ash/common/system/chromeos/supervised/custodian_info_tray_observer.h"
 #include "ash/common/system/tray/system_tray_item.h"
 #include "ash/common/system/tray/view_click_listener.h"
 #include "base/macros.h"
 #include "base/strings/string16.h"
 
+namespace gfx {
+struct VectorIcon;
+}  // namespace gfx
+
 namespace ash {
 class LabelTrayView;
 class SystemTray;
 
 class ASH_EXPORT TraySupervisedUser : public SystemTrayItem,
                                       public ViewClickListener,
                                       public CustodianInfoTrayObserver {
  public:
   explicit TraySupervisedUser(SystemTray* system_tray);
   ~TraySupervisedUser() override;
@@ skipping 15 matching lines @@
 
  private:
   friend class TraySupervisedUserTest;
 
   static const char kNotificationId[];
 
   void CreateOrUpdateNotification(const base::string16& new_message);
 
   void CreateOrUpdateSupervisedWarningNotification();
 
-  int GetSupervisedUserIconId() const;
+  const gfx::VectorIcon& GetSupervisedUserIcon() const;
 
   LabelTrayView* tray_view_;
 
   // Previous login status to avoid showing notification upon unlock.
   LoginStatus status_;
 
   // Previous user supervised state to avoid showing notification upon unlock.
   bool is_user_supervised_;
 
   DISALLOW_COPY_AND_ASSIGN(TraySupervisedUser);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_CHROMEOS_SUPERVISED_TRAY_SUPERVISED_USER_H_