Switch to using scoped_ptr with UserData

components/data_use_measurement/core/data_use_user_data.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 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"
 #include "base/supports_user_data.h"
 
 namespace net {
 class URLFetcher;
 }
 
 namespace data_use_measurement {
@@ skipping 71 matching lines @@
     TYPE_MAX = 13,
   };
 
   // The state of the application. Only available on Android and on other
   // platforms it is always FOREGROUND.
   enum AppState { UNKNOWN, BACKGROUND, FOREGROUND };
 
   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.
   static std::string GetServiceNameAsString(ServiceName service);
 
   // Services should use this function to attach their |service_name| to the
   // URLFetcher serving them.
   static void AttachToFetcher(net::URLFetcher* fetcher,
                               ServiceName service_name);
 
@@ skipping 19 matching lines @@
   AppState app_state_;
 
   DataUseContentType content_type_;
 
   DISALLOW_COPY_AND_ASSIGN(DataUseUserData);
 };
 
 }  // namespace data_use_measurement
 
 #endif  // COMPONENTS_DATA_USE_MEASUREMENT_CORE_DATA_USE_USER_DATA_H_