Replace scoped_ptr with std::unique_ptr in //ui

ui/ozone/platform/drm/gpu/page_flip_request.h

 // 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.
 
 #ifndef UI_OZONE_PLATFORM_DRM_GPU_PAGE_FLIP_REQUEST_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_PAGE_FLIP_REQUEST_H_
 
+#include <memory>
+
 #include "base/atomic_ref_count.h"
 #include "base/callback.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/gfx/swap_result.h"
 #include "ui/ozone/public/surface_ozone_egl.h"
 
 namespace ui {
 
 class PageFlipRequest : public base::RefCounted<PageFlipRequest> {
  public:
   PageFlipRequest(int crtc_count, const SwapCompletionCallback& callback);
 
   void Signal(gfx::SwapResult result);
 
  private:
   friend class base::RefCounted<PageFlipRequest>;
   ~PageFlipRequest();
 
   SwapCompletionCallback callback_;
   int crtc_count_;
   gfx::SwapResult result_ = gfx::SwapResult::SWAP_ACK;
 
   DISALLOW_COPY_AND_ASSIGN(PageFlipRequest);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_PAGE_FLIP_REQUEST_H_