Convert //ash from scoped_ptr to std::unique_ptr

ash/test/user_metrics_recorder_test_api.h

 // Copyright 2015 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 ASH_TEST_USER_METRICS_RECORDER_TEST_API_H_
 #define ASH_TEST_USER_METRICS_RECORDER_TEST_API_H_
 
 #include "ash/metrics/user_metrics_recorder.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 
 namespace ash {
 namespace test {
 
 // Test API to access internals of the UserMetricsRecorder class.
 class UserMetricsRecorderTestAPI {
  public:
   UserMetricsRecorderTestAPI();
   ~UserMetricsRecorderTestAPI();
 
   // Accessor to UserMetricsRecorder::RecordPeriodicMetrics().
   void RecordPeriodicMetrics();
 
   // Accessor to UserMetricsRecorder::IsUserInActiveDesktopEnvironment().
   bool IsUserInActiveDesktopEnvironment() const;
 
  private:
   // The UserMetricsRecorder that |this| is providing internal access to.
   UserMetricsRecorder user_metrics_recorder_;
 
   DISALLOW_COPY_AND_ASSIGN(UserMetricsRecorderTestAPI);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_TEST_USER_METRICS_RECORDER_TEST_API_H_