Convert //ash from scoped_ptr to std::unique_ptr

ash/system/chromeos/session/logout_button_tray.cc

 // Copyright 2014 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.
 
 #include "ash/system/chromeos/session/logout_button_tray.h"
 
+#include <memory>
 #include <utility>
 
 #include "ash/shelf/shelf_types.h"
 #include "ash/shell.h"
 #include "ash/system/chromeos/session/logout_confirmation_controller.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_utils.h"
 #include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
 #include "grit/ash_resources.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/events/event.h"
 #include "ui/gfx/geometry/insets.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/views/bubble/tray_bubble_view.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/controls/button/label_button_border.h"
 #include "ui/views/painter.h"
 
@@ skipping 37 matching lines @@
 
 }  // namespace
 
 LogoutButton::LogoutButton(views::ButtonListener* listener)
     : views::LabelButton(listener, base::string16()) {
   SetupLabelForTray(label());
   SetFontList(label()->font_list());
   for (size_t state = 0; state < views::Button::STATE_COUNT; ++state)
     SetTextColor(static_cast<views::Button::ButtonState>(state), SK_ColorWHITE);
 
-  scoped_ptr<views::LabelButtonAssetBorder> border(
+  std::unique_ptr<views::LabelButtonAssetBorder> border(
       new views::LabelButtonAssetBorder(views::Button::STYLE_TEXTBUTTON));
   border->SetPainter(false, views::Button::STATE_NORMAL,
       views::Painter::CreateImageGridPainter(kLogoutButtonNormalImages));
   border->SetPainter(false, views::Button::STATE_HOVERED,
       views::Painter::CreateImageGridPainter(kLogoutButtonNormalImages));
   border->SetPainter(false, views::Button::STATE_PRESSED,
       views::Painter::CreateImageGridPainter(kLogoutButtonPushedImages));
   gfx::Insets insets = border->GetInsets();
   insets += gfx::Insets(0, kLogoutButtonHorizontalExtraPadding,
                         0, kLogoutButtonHorizontalExtraPadding);
@@ skipping 71 matching lines @@
   UpdateVisibility();
 }
 
 void LogoutButtonTray::UpdateVisibility() {
   SetVisible(show_logout_button_in_tray_ &&
              login_status_ != user::LOGGED_IN_NONE &&
              login_status_ != user::LOGGED_IN_LOCKED);
 }
 
 }  // namespace ash