mash: Move system tray cast code into //ash/common

ash/common/system/chromeos/screen_security/screen_capture_tray_item.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 ASH_SYSTEM_CHROMEOS_SCREEN_CAPTURE_SCREEN_CAPTURE_TRAY_ITEM_H_
-#define ASH_SYSTEM_CHROMEOS_SCREEN_CAPTURE_SCREEN_CAPTURE_TRAY_ITEM_H_
+#ifndef ASH_COMMON_SYSTEM_CHROMEOS_SCREEN_SECURITY_SCREEN_CAPTURE_TRAY_ITEM_H_
+#define ASH_COMMON_SYSTEM_CHROMEOS_SCREEN_SECURITY_SCREEN_CAPTURE_TRAY_ITEM_H_
 
 #include "ash/common/shell_observer.h"
 #include "ash/common/system/chromeos/screen_security/screen_capture_observer.h"
-#include "ash/system/chromeos/screen_security/screen_tray_item.h"
+#include "ash/common/system/chromeos/screen_security/screen_tray_item.h"
 #include "base/macros.h"
 
 namespace views {
 class View;
 }
 
 namespace ash {
 
 class ASH_EXPORT ScreenCaptureTrayItem : public ScreenTrayItem,
                                          public ScreenCaptureObserver,
@@ skipping 21 matching lines @@
   void OnCastingSessionStartedOrStopped(bool started) override;
 
   base::string16 screen_capture_status_;
   bool is_casting_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenCaptureTrayItem);
 };
 
 }  // namespace ash
 
-#endif  // ASH_SYSTEM_CHROMEOS_SCREEN_CAPTURE_SCREEN_CAPTURE_TRAY_ITEM_H_
+#endif  // ASH_COMMON_SYSTEM_CHROMEOS_SCREEN_SECURITY_SCREEN_CAPTURE_TRAY_ITEM_H_