mash: Move SystemTrayImage and TrayImageItem to //ash/common

ash/system/chromeos/network/tray_sms.h

 // 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_SMS_H
 #define ASH_SYSTEM_CHROMEOS_NETWORK_TRAY_SMS_H
 
 #include <stddef.h>
 
 #include <string>
 
-#include "ash/system/tray/system_tray_item.h"
+#include "ash/common/system/tray/system_tray_item.h"
 #include "base/macros.h"
 #include "base/values.h"
 #include "chromeos/network/network_sms_handler.h"
 
 namespace ash {
 
 class TraySms : public SystemTrayItem,
                 public chromeos::NetworkSmsHandler::Observer {
  public:
   explicit TraySms(SystemTray* system_tray);
@@ skipping 34 matching lines @@
   SmsDetailedView* detailed_;
   SmsNotificationView* notification_;
   base::ListValue messages_;
 
   DISALLOW_COPY_AND_ASSIGN(TraySms);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_NETWORK_TRAY_SMS_H