mash: Migrate tray date view to //ash/common types

ash/system/date/date_view.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_DATE_DATE_VIEW_H_
 #define ASH_SYSTEM_DATE_DATE_VIEW_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
 #include "ash/common/system/tray/actionable_view.h"
 #include "ash/system/date/tray_date.h"
 #include "base/i18n/time_formatting.h"
 #include "base/macros.h"
-#include "base/timer/timer.h"
+#include "base/time/time.h"

[msw, 2016/06/14 00:18:26]

Isn't base/timer/timer.h needed for |base::OneShotTimer timer_;|?

[James Cook, 2016/06/14 16:54:07]

Whoops. I put it back and forward-declared base::Time.

 #include "ui/views/view.h"
 
 namespace views {
 class Label;
 }
 
 namespace ash {
 namespace tray {
 
 // Abstract base class containing common updating and layout code for the
@@ skipping 107 matching lines @@
   std::unique_ptr<views::Label> vertical_label_hours_;
   std::unique_ptr<views::Label> vertical_label_minutes_;
 
   DISALLOW_COPY_AND_ASSIGN(TimeView);
 };
 
 }  // namespace tray
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_DATE_DATE_VIEW_H_