Convert //ash from scoped_ptr to std::unique_ptr

ash/system/tray/tray_item_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_TRAY_TRAY_ITEM_VIEW_H_
 #define ASH_SYSTEM_TRAY_TRAY_ITEM_VIEW_H_
 
+#include <memory>
+
 #include "ash/ash_export.h"
 #include "base/macros.h"
 #include "ui/gfx/animation/animation_delegate.h"
 #include "ui/views/view.h"
 
 namespace gfx {
 class SlideAnimation;
 }
 
 namespace views {
@@ skipping 45 matching lines @@
  private:
   // Overridden from views::View.
   void ChildPreferredSizeChanged(View* child) override;
 
   // Overridden from gfx::AnimationDelegate.
   void AnimationProgressed(const gfx::Animation* animation) override;
   void AnimationEnded(const gfx::Animation* animation) override;
   void AnimationCanceled(const gfx::Animation* animation) override;
 
   SystemTrayItem* owner_;
-  scoped_ptr<gfx::SlideAnimation> animation_;
+  std::unique_ptr<gfx::SlideAnimation> animation_;
   views::Label* label_;
   views::ImageView* image_view_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayItemView);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_ITEM_VIEW_H_