Reporting: Add histograms.

net/reporting/reporting_delivery_agent.cc

 // 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.
 
 #include "net/reporting/reporting_delivery_agent.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 152 matching lines @@
           endpoint, json,
           base::Bind(&ReportingDeliveryAgentImpl::OnUploadComplete,
                      weak_factory_.GetWeakPtr(),
                      base::MakeUnique<Delivery>(endpoint, reports)));
     }
   }
 
   void OnUploadComplete(const std::unique_ptr<Delivery>& delivery,
                         ReportingUploader::Outcome outcome) {
     if (outcome == ReportingUploader::Outcome::SUCCESS) {
-      cache()->RemoveReports(delivery->reports);
+      cache()->RemoveReports(delivery->reports,
+                             ReportingReport::Outcome::DELIVERED);
       endpoint_manager()->InformOfEndpointRequest(delivery->endpoint, true);
     } else {
       cache()->IncrementReportsAttempts(delivery->reports);
       endpoint_manager()->InformOfEndpointRequest(delivery->endpoint, false);
     }
 
     if (outcome == ReportingUploader::Outcome::REMOVE_ENDPOINT)
       cache()->RemoveClientsForEndpoint(delivery->endpoint);
 
     for (const ReportingReport* report : delivery->reports) {
@@ skipping 31 matching lines @@
 
 // static
 std::unique_ptr<ReportingDeliveryAgent> ReportingDeliveryAgent::Create(
     ReportingContext* context) {
   return base::MakeUnique<ReportingDeliveryAgentImpl>(context);
 }
 
 ReportingDeliveryAgent::~ReportingDeliveryAgent() {}
 
 }  // namespace net