Replace scoped_ptr with std::unique_ptr in //ui

ui/snapshot/snapshot_async.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_SNAPSHOT_SNAPSHOT_ASYNC_H_
 #define UI_SNAPSHOT_SNAPSHOT_ASYNC_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "cc/output/copy_output_result.h"
 #include "ui/snapshot/snapshot.h"
 
 namespace base {
 class TaskRunner;
 }
 
 namespace gfx {
 class Size;
 }
 
 namespace ui {
 
 // Helper methods for async snapshots to convert a cc::CopyOutputResult into a
 // ui::GrabWindowSnapshot callback.
 class SnapshotAsync {
  public:
   static void ScaleCopyOutputResult(
       const GrabWindowSnapshotAsyncCallback& callback,
       const gfx::Size& target_size,
       scoped_refptr<base::TaskRunner> background_task_runner,
-      scoped_ptr<cc::CopyOutputResult> result);
+      std::unique_ptr<cc::CopyOutputResult> result);
 
   static void EncodeCopyOutputResult(
       const GrabWindowSnapshotAsyncPNGCallback& callback,
       scoped_refptr<base::TaskRunner> background_task_runner,
-      scoped_ptr<cc::CopyOutputResult> result);
+      std::unique_ptr<cc::CopyOutputResult> result);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(SnapshotAsync);
 };
 
 }  // namespace ui
 
 #endif  // UI_SNAPSHOT_SNAPSHOT_ASYNC_H_