Reporting: Wrap existing classes in context.

net/reporting/reporting_context.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_CONTEXT_H_
+#define NET_REPORTING_REPORTING_CONTEXT_H_
+
+#include <memory>
+
+#include "base/time/time.h"
+#include "net/base/backoff_entry.h"
+#include "net/base/net_export.h"
+#include "net/reporting/reporting_policy.h"
+
+namespace base {
+class Clock;
+class TickClock;
+}  // namespace base
+
+namespace net {
+
+class ReportingCache;
+class ReportingDelegate;
+class ReportingDeliveryAgent;
+class ReportingEndpointManager;
+class ReportingUploader;
+class URLRequestContext;
+
+// Contains the various internal classes that make up the Reporting system.
+// Wrapped by ReportingService, which provides the external interface.
+class NET_EXPORT ReportingContext {
+ public:
+  static std::unique_ptr<ReportingContext> Create(
+      const ReportingPolicy& policy,
+      std::unique_ptr<ReportingDelegate> delegate,
+      URLRequestContext* request_context);
+
+  ~ReportingContext();
+
+  const ReportingPolicy& policy() { return policy_; }
+  ReportingDelegate* delegate() { return delegate_.get(); }
+
+  base::Clock* clock() { return clock_.get(); }
+  base::TickClock* tick_clock() { return tick_clock_.get(); }
+  ReportingUploader* uploader() { return uploader_.get(); }
+
+  ReportingCache* cache() { return cache_.get(); }
+  ReportingEndpointManager* endpoint_manager() {
+    return endpoint_manager_.get();
+  }
+  ReportingDeliveryAgent* delivery_agent() { return delivery_agent_.get(); }
+
+ protected:
+  ReportingContext(const ReportingPolicy& policy,
+                   std::unique_ptr<ReportingDelegate> delegate,
+                   std::unique_ptr<base::Clock> clock,
+                   std::unique_ptr<base::TickClock> tick_clock,
+                   std::unique_ptr<ReportingUploader> uploader);
+
+ private:
+  ReportingPolicy policy_;
+  std::unique_ptr<ReportingDelegate> delegate_;
+
+  std::unique_ptr<base::Clock> clock_;
+  std::unique_ptr<base::TickClock> tick_clock_;
+  std::unique_ptr<ReportingUploader> uploader_;
+
+  std::unique_ptr<ReportingCache> cache_;
+
+  // |endpoint_manager_| must come after |tick_clock_| and |cache_|.
+  std::unique_ptr<ReportingEndpointManager> endpoint_manager_;
+
+  // |delivery_agent_| must come after |tick_clock_|, |uploader_|, |cache_|,
+  // and |endpoint_manager_|.
+  std::unique_ptr<ReportingDeliveryAgent> delivery_agent_;
+
+  DISALLOW_COPY_AND_ASSIGN(ReportingContext);
+};
+
+}  // namespace net
+
+#endif  // NET_REPORTING_REPORTING_CONTEXT_H_