Track network stack error codes from UMA and UKM

components/ukm/ukm_reporting_service.h

 // Copyright 2017 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.
 
 // This file defines a service that sends ukm logs to a server.
 
 #ifndef COMPONENTS_UKM_UKM_REPORTING_SERVICE_H_
 #define COMPONENTS_UKM_UKM_REPORTING_SERVICE_H_
 
 #include <stdint.h>
@@ skipping 34 matching lines @@
   }
 
  private:
   // metrics:ReportingService:
   metrics::LogStore* log_store() override;
   std::string GetUploadUrl() const override;
   base::StringPiece upload_mime_type() const override;
   metrics::MetricsLogUploader::MetricServiceType service_type() const override;
   void LogCellularConstraint(bool upload_canceled) override;
   void LogResponseCode(int response_code) override;
+  void LogErrorCode(int error_code) override;
   void LogSuccess(size_t log_size) override;
   void LogLargeRejection(size_t log_size) override;
 
   metrics::PersistedLogs persisted_logs_;
 
   DISALLOW_COPY_AND_ASSIGN(UkmReportingService);
 };
 
 }  // namespace ukm
 
 #endif  // COMPONENTS_UKM_UKM_REPORTING_SERVICE_H_