Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/ui/focus_ring_layer.h

 // Copyright 2013 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 CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_LAYER_H_
 #define CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_LAYER_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/compositor/layer_delegate.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace aura {
 class Window;
 }
 
 namespace ui {
 class Layer;
 }
@@ skipping 35 matching lines @@
   void OnDeviceScaleFactorChanged(float device_scale_factor) override;
   base::Closure PrepareForLayerBoundsChange() override;
 
   // The object that owns this layer.
   FocusRingLayerDelegate* delegate_;
 
   // The current root window containing the focused object.
   aura::Window* root_window_;
 
   // The current layer.
-  scoped_ptr<ui::Layer> layer_;
+  std::unique_ptr<ui::Layer> layer_;
 
   // The bounding rectangle of the focused object, in |root_window_|
   // coordinates.
   gfx::Rect focus_ring_;
 
   DISALLOW_COPY_AND_ASSIGN(FocusRingLayer);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_LAYER_H_