Switch to using scoped_ptr with UserData

components/data_use_measurement/core/data_use_user_data.h

Index: components/data_use_measurement/core/data_use_user_data.h
diff --git a/components/data_use_measurement/core/data_use_user_data.h b/components/data_use_measurement/core/data_use_user_data.h
index 584e7a52bd1950392907f5e5c5081d9110297271..0ea0ae8d43760846eb76d1cd095e0917745a7da4 100644
--- a/components/data_use_measurement/core/data_use_user_data.h
+++ b/components/data_use_measurement/core/data_use_user_data.h
@@ -5,6 +5,7 @@
 #ifndef COMPONENTS_DATA_USE_MEASUREMENT_CORE_DATA_USE_USER_DATA_H_
 #define COMPONENTS_DATA_USE_MEASUREMENT_CORE_DATA_USE_USER_DATA_H_
 
+#include <memory>
 #include <string>
 
 #include "base/macros.h"
@@ -96,9 +97,8 @@ class DataUseUserData : public base::SupportsUserData::Data {
   DataUseUserData(ServiceName service_name, AppState app_state);
   ~DataUseUserData() override;
 
-  // Helper function to create DataUseUserData. The caller takes the ownership
-  // of the returned object.
-  static base::SupportsUserData::Data* Create(
+  // Helper function to create DataUseUserData.
+  static std::unique_ptr<base::SupportsUserData::Data> Create(
       DataUseUserData::ServiceName service);
 
   // Return the service name of the ServiceName enum.