Reporting: Wrap existing classes in context.

net/reporting/reporting_policy.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_POLICY_H_
+#define NET_REPORTING_REPORTING_POLICY_H_
+
+#include "base/time/time.h"
+#include "net/base/backoff_entry.h"
+#include "net/base/net_export.h"
+
+namespace net {
+
+// Various policy knobs for the Reporting system.
+struct NET_EXPORT ReportingPolicy {
+  // Provides a reasonable default for use in a browser embedder.
+  ReportingPolicy();
+  ReportingPolicy(const ReportingPolicy& other);
+  ~ReportingPolicy();
+
+  // Backoff policy for failing endpoints.
+  BackoffEntry::Policy endpoint_backoff_policy;
+};
+
+}  // namespace net
+
+#endif  // NET_REPORTING_REPORTING_POLICY_H_