Remove non-cros support from ash/common/system.

ash/common/system/date/system_info_default_view.h

 // Copyright 2016 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_DATE_SYSTEM_INFO_DEFAULT_VIEW_H_
 #define ASH_COMMON_SYSTEM_DATE_SYSTEM_INFO_DEFAULT_VIEW_H_
 
 #include "ash/ash_export.h"
 #include "ash/common/login_status.h"
 #include "base/macros.h"
 #include "ui/views/view.h"
 
 namespace ash {
-#if defined(OS_CHROMEOS)
 class PowerStatusView;
-#endif  // defined(OS_CHROMEOS)
 class SystemTrayItem;
 class TriView;
 
 namespace tray {
 class DateView;
 }  // namespace tray
 
 // The default view for the system info row in the system menu. Contains the
 // current date and, if a battery is present, a string showing the current
 // power status.
@@ skipping 14 matching lines @@
 
   // Computes and returns the width for |date_view_| so that the separator to
   // its right has the same x-position as a separator in the tiles row above.
   // Depending on the width of the date string, we align the separator with
   // either the second or third separator in the tiles row (|kMinNumTileWidths|
   // and |kMaxNumTileWidths| respectively.
   static int CalculateDateViewWidth(int preferred_width);
 
   tray::DateView* date_view_;
 
-#if defined(OS_CHROMEOS)
   PowerStatusView* power_status_view_ = nullptr;
-#endif  // defined(OS_CHROMEOS)
 
   TriView* tri_view_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemInfoDefaultView);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_DATE_SYSTEM_INFO_DEFAULT_VIEW_H_