Minor refactor to get rid of a friend association

components/data_use_measurement/core/data_use.h

 // Copyright 2016 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_H_
 #define COMPONENTS_DATA_USE_MEASUREMENT_CORE_DATA_USE_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 38 matching lines @@
   const GURL& url() const { return url_; }
 
   void set_url(const GURL& url) { url_ = url; }
 
   const std::string& description() const { return description_; }
 
   void set_description(const std::string& description) {
     description_ = description;
   }
 
+  // Increments the total received and sent byte counts. Can be used to
+  // decrement the byte counts as well.
+  void IncrementTotalBytes(int64_t bytes_received, int64_t bytes_sent);
+
   int64_t total_bytes_received() const { return total_bytes_received_; }
 
   int64_t total_bytes_sent() const { return total_bytes_sent_; }
 
   TrafficType traffic_type() const { return traffic_type_; }
 
  private:
-  // TODO(rajendrant): Remove this friend after adding member function to
-  // increment total sent/received bytes.
-  friend class DataUseRecorder;
-
   GURL url_;
   std::string description_;
   const TrafficType traffic_type_;
 
   int64_t total_bytes_sent_;
   int64_t total_bytes_received_;
 
   DISALLOW_COPY_AND_ASSIGN(DataUse);
 };
 
 }  // namespace data_use_measurement
 
 #endif  // COMPONENTS_DATA_USE_MEASUREMENT_CORE_DATA_USE_H_