mash: Convert system tray network item to wm common types

ash/system/chromeos/network/tray_vpn.h

Index: ash/system/chromeos/network/tray_vpn.h
diff --git a/ash/system/chromeos/network/tray_vpn.h b/ash/system/chromeos/network/tray_vpn.h
deleted file mode 100644
index ce73e79ac0db0cd170702e216b3a6e2a272a68c2..0000000000000000000000000000000000000000
--- a/ash/system/chromeos/network/tray_vpn.h
+++ /dev/null
@@ -1,52 +0,0 @@
-// Copyright (c) 2012 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_CHROMEOS_NETWORK_TRAY_VPN_H
-#define ASH_SYSTEM_CHROMEOS_NETWORK_TRAY_VPN_H
-
-#include <memory>
-
-#include "ash/common/system/tray/system_tray_item.h"
-#include "ash/system/chromeos/network/tray_network_state_observer.h"
-#include "base/macros.h"
-
-namespace ash {
-class TrayNetworkStateObserver;
-
-namespace tray {
-class NetworkDetailedView;
-class VpnDefaultView;
-class VpnDetailedView;
-}
-
-class TrayVPN : public SystemTrayItem,
-                public TrayNetworkStateObserver::Delegate {
- public:
-  explicit TrayVPN(SystemTray* system_tray);
-  ~TrayVPN() override;
-
-  // SystemTrayItem
-  views::View* CreateTrayView(LoginStatus status) override;
-  views::View* CreateDefaultView(LoginStatus status) override;
-  views::View* CreateDetailedView(LoginStatus status) override;
-  void DestroyTrayView() override;
-  void DestroyDefaultView() override;
-  void DestroyDetailedView() override;
-  void UpdateAfterLoginStatusChange(LoginStatus status) override;
-  void UpdateAfterShelfAlignmentChange(ShelfAlignment alignment) override;
-
-  // TrayNetworkStateObserver::Delegate
-  void NetworkStateChanged() override;
-
- private:
-  tray::VpnDefaultView* default_;
-  tray::NetworkDetailedView* detailed_;
-  std::unique_ptr<TrayNetworkStateObserver> network_state_observer_;
-
-  DISALLOW_COPY_AND_ASSIGN(TrayVPN);
-};
-
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_CHROMEOS_NETWORK_TRAY_VPN_H