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

ash/system/date/system_info_default_view.h

Index: ash/system/date/system_info_default_view.h
diff --git a/ash/system/date/system_info_default_view.h b/ash/system/date/system_info_default_view.h
deleted file mode 100644
index 287f7c156c899d6a2394525573c56bc42576c718..0000000000000000000000000000000000000000
--- a/ash/system/date/system_info_default_view.h
+++ /dev/null
@@ -1,58 +0,0 @@
-// 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_SYSTEM_DATE_SYSTEM_INFO_DEFAULT_VIEW_H_
-#define ASH_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 {
-class PowerStatusView;
-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.
-class ASH_EXPORT SystemInfoDefaultView : public views::View {
- public:
-  SystemInfoDefaultView(SystemTrayItem* owner, LoginStatus login);
-
-  ~SystemInfoDefaultView() override;
-
-  tray::DateView* GetDateView();
-  const tray::DateView* GetDateView() const;
-
-  // views::View:
-  void Layout() override;
-
- private:
-  friend class SystemInfoDefaultViewTest;
-
-  // 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_;
-
-  PowerStatusView* power_status_view_ = nullptr;
-
-  TriView* tri_view_;
-
-  DISALLOW_COPY_AND_ASSIGN(SystemInfoDefaultView);
-};
-
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_DATE_SYSTEM_INFO_DEFAULT_VIEW_H_