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

components/metrics/metrics_service_client.h

Index: components/metrics/metrics_service_client.h
diff --git a/components/metrics/metrics_service_client.h b/components/metrics/metrics_service_client.h
index 43c5d136ca8e00cc1f42e48b1d1c42e48362d575..21c41a9525f1d11822da29d1e7a5ddb750871a11 100644
--- a/components/metrics/metrics_service_client.h
+++ b/components/metrics/metrics_service_client.h
@@ -6,10 +6,11 @@
 #define COMPONENTS_METRICS_METRICS_SERVICE_CLIENT_H_
 
 #include <stdint.h>
+
+#include <memory>
 #include <string>
 
 #include "base/callback_forward.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "components/metrics/proto/system_profile.pb.h"
@@ -93,7 +94,7 @@ class MetricsServiceClient {
 
   // Creates a MetricsLogUploader with the specified parameters (see comments on
   // MetricsLogUploader for details).
-  virtual scoped_ptr<MetricsLogUploader> CreateUploader(
+  virtual std::unique_ptr<MetricsLogUploader> CreateUploader(
       const base::Callback<void(int)>& on_upload_complete) = 0;
 
   // Returns the standard interval between upload attempts.