Track network stack error codes from UMA and UKM

components/metrics/metrics_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 metrics logs to a server.
 
 #ifndef COMPONENTS_METRICS_METRICS_REPORTING_SERVICE_H_
 #define COMPONENTS_METRICS_METRICS_REPORTING_SERVICE_H_
 
 #include <stdint.h>
@@ skipping 34 matching lines @@
 
  private:
   // ReportingService:
   LogStore* log_store() override;
   std::string GetUploadUrl() const override;
   base::StringPiece upload_mime_type() const override;
   MetricsLogUploader::MetricServiceType service_type() const override;
   void LogActualUploadInterval(base::TimeDelta interval) 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;
 
   MetricsLogStore metrics_log_store_;
 
   DISALLOW_COPY_AND_ASSIGN(MetricsReportingService);
 };
 
 }  // namespace metrics
 
 #endif  // COMPONENTS_METRICS_METRICS_REPORTING_SERVICE_H_