Convert //components/metrics from scoped_ptr to std::unique_ptr

components/metrics/test_metrics_service_client.cc

Index: components/metrics/test_metrics_service_client.cc
diff --git a/components/metrics/test_metrics_service_client.cc b/components/metrics/test_metrics_service_client.cc
index 7aeaddf9c695c3802e927ede89feab143c6f2545..438f2344653a3c956c8d0d4e5fc8b94a43e210a8 100644
--- a/components/metrics/test_metrics_service_client.cc
+++ b/components/metrics/test_metrics_service_client.cc
@@ -72,9 +72,9 @@ void TestMetricsServiceClient::CollectFinalMetricsForLog(
   done_callback.Run();
 }
 
-scoped_ptr<MetricsLogUploader> TestMetricsServiceClient::CreateUploader(
+std::unique_ptr<MetricsLogUploader> TestMetricsServiceClient::CreateUploader(
     const base::Callback<void(int)>& on_upload_complete) {
-  return scoped_ptr<MetricsLogUploader>();
+  return std::unique_ptr<MetricsLogUploader>();
 }
 
 base::TimeDelta TestMetricsServiceClient::GetStandardUploadInterval() {