chromeos: Move files in //ash/common to //ash, part 1

ash/system/tray/default_system_tray_delegate.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_COMMON_SYSTEM_TRAY_DEFAULT_SYSTEM_TRAY_DELEGATE_H_
-#define ASH_COMMON_SYSTEM_TRAY_DEFAULT_SYSTEM_TRAY_DELEGATE_H_
+#ifndef ASH_SYSTEM_TRAY_DEFAULT_SYSTEM_TRAY_DELEGATE_H_
+#define ASH_SYSTEM_TRAY_DEFAULT_SYSTEM_TRAY_DELEGATE_H_
 
 #include "ash/ash_export.h"
-#include "ash/common/system/tray/system_tray_delegate.h"
+#include "ash/system/tray/system_tray_delegate.h"
 #include "base/macros.h"
 
 namespace ash {
 
 class ASH_EXPORT DefaultSystemTrayDelegate : public SystemTrayDelegate {
  public:
   DefaultSystemTrayDelegate();
   ~DefaultSystemTrayDelegate() override;
 
   // SystemTrayDelegate:
@@ skipping 10 matching lines @@
   int GetSystemTrayMenuWidth() override;
 
  private:
   bool bluetooth_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(DefaultSystemTrayDelegate);
 };
 
 }  // namespace ash
 
-#endif  // ASH_COMMON_SYSTEM_TRAY_DEFAULT_SYSTEM_TRAY_DELEGATE_H_
+#endif  // ASH_SYSTEM_TRAY_DEFAULT_SYSTEM_TRAY_DELEGATE_H_