Convert //ash from scoped_ptr to std::unique_ptr

ash/system/tray/system_tray_bubble.cc

 // 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.
 
 #include "ash/system/tray/system_tray_bubble.h"
 
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_item.h"
@@ skipping 35 matching lines @@
       : layer_(layer) {
   }
 
   ~AnimationObserverDeleteLayer() override {}
 
   void OnImplicitAnimationsCompleted() override {
     base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, this);
   }
 
  private:
-  scoped_ptr<ui::Layer> layer_;
+  std::unique_ptr<ui::Layer> layer_;
 
   DISALLOW_COPY_AND_ASSIGN(AnimationObserverDeleteLayer);
 };
 
 }  // namespace
 
 // SystemTrayBubble
 
 SystemTrayBubble::SystemTrayBubble(
     ash::SystemTray* tray,
@@ skipping 11 matching lines @@
   // Reset the host pointer in bubble_view_ in case its destruction is deferred.
   if (bubble_view_)
     bubble_view_->reset_delegate();
 }
 
 void SystemTrayBubble::UpdateView(
     const std::vector<ash::SystemTrayItem*>& items,
     BubbleType bubble_type) {
   DCHECK(bubble_type != BUBBLE_TYPE_NOTIFICATION);
 
-  scoped_ptr<ui::Layer> scoped_layer;
+  std::unique_ptr<ui::Layer> scoped_layer;
   if (bubble_type != bubble_type_) {
     base::TimeDelta swipe_duration =
         base::TimeDelta::FromMilliseconds(kSwipeDelayMS);
     scoped_layer = bubble_view_->RecreateLayer();
     // Keep the reference to layer as we need it after releasing it.
     ui::Layer* layer = scoped_layer.get();
     DCHECK(layer);
     layer->SuppressPaint();
 
     // When transitioning from detailed view to default view, animate the
@@ skipping 217 matching lines @@
     // 2 items, which are the bottom header row and the one just above it.
     bubble_view_->AddChildView(new TrayPopupItemContainer(
         item_views[i], is_default_bubble,
         is_default_bubble && (i < item_views.size() - 2)));
   }
   if (focus_view)
     focus_view->RequestFocus();
 }
 
 }  // namespace ash