Reporting: Wrap existing classes in context.

net/reporting/reporting_delivery_agent.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.
 
 #ifndef NET_REPORTING_REPORTING_DELIVERY_AGENT_H_
 #define NET_REPORTING_REPORTING_DELIVERY_AGENT_H_
 
 #include <memory>
 #include <set>
 #include <string>
 #include <utility>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "net/base/backoff_entry.h"
 #include "net/base/net_export.h"
-#include "net/reporting/reporting_endpoint_manager.h"
+#include "net/reporting/reporting_context.h"
 #include "net/reporting/reporting_uploader.h"
 #include "url/gurl.h"
 #include "url/origin.h"
 
 namespace base {
 class TickClock;
 }  // namespace base
 
 namespace net {
 
 class ReportingCache;
+class ReportingEndpointManager;
 
 // Takes reports from the ReportingCache, assembles reports into deliveries to
 // endpoints, and sends those deliveries using ReportingUploader.
 //
 // Since the Reporting spec is completely silent on issues of concurrency, the
 // delivery agent handles it as so:
 //
 // 1. An individual report can only be included in one delivery at once -- if
 //    SendReports is called again while a report is being delivered, it won't
 //    be included in another delivery during that call to SendReports. (This is,
@@ skipping 10 matching lines @@
 //    group), they won't be included in any delivery during that call to
 //    SendReports. (This prevents the agent from getting around rule 2 by using
 //    other endpoints.)
 //
 // 4. Reports for the same origin *can* be included in multiple parallel
 //    deliveries if they are in different groups within that origin.
 //
 // (Note that a single delivery can contain an infinite number of reports.)
 class NET_EXPORT ReportingDeliveryAgent {
  public:
-  // |clock|, |cache|, |uploader|, and |endpoint_backoff_policy| must all
-  // outlive the ReportingDeliveryAgent.
-  ReportingDeliveryAgent(base::TickClock* clock,
-                         ReportingCache* cache,
-                         ReportingUploader* uploader,
-                         const BackoffEntry::Policy* endpoint_backoff_policy);
+  // |context| must outlive the ReportingDeliveryAgent.
+  ReportingDeliveryAgent(ReportingContext* context);
   ~ReportingDeliveryAgent();
 
   // Tries to deliver all of the reports in the cache. Reports that are already
   // being delivered will not be attempted a second time, and reports that do
   // not have a viable endpoint will be neither attempted nor removed.
   void SendReports();
 
  private:
   class Delivery;
 
   using OriginGroup = std::pair<url::Origin, std::string>;
 
   void OnUploadComplete(const std::unique_ptr<Delivery>& delivery,
                         ReportingUploader::Outcome outcome);
 
-  base::TickClock* clock_;
-  ReportingCache* cache_;
-  ReportingUploader* uploader_;
+  base::TickClock* tick_clock() { return context_->tick_clock(); }
+  ReportingCache* cache() { return context_->cache(); }
+  ReportingUploader* uploader() { return context_->uploader(); }
+  ReportingEndpointManager* endpoint_manager() {
+    return context_->endpoint_manager();
+  }
 
-  ReportingEndpointManager endpoint_manager_;
+  ReportingContext* context_;
 
   // Tracks OriginGroup tuples for which there is a pending delivery running.
   // (Would be an unordered_set, but there's no hash on pair.)
   std::set<OriginGroup> pending_origin_groups_;
 
   base::WeakPtrFactory<ReportingDeliveryAgent> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ReportingDeliveryAgent);
 };
 
 }  // namespace net
 
 #endif  // NET_REPORTING_REPORTING_DELIVERY_AGENT_H_