Reporting: Set up in ProfileImplIOData.

net/reporting/reporting_persister.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_PERSISTER_H_
 #define NET_REPORTING_REPORTING_PERSISTER_H_
 
 #include <memory>
 
+#include "base/callback.h"
 #include "net/base/net_export.h"
 
 namespace net {
 
 class ReportingContext;
 
 // Will persist the state of the Reporting system to (reasonably) stable
 // storage using an as-yet-unwritten persistence mechanism within //net.
 class NET_EXPORT ReportingPersister {
  public:
   // Creates a ReportingPersister. |context| must outlive the persister.
   static std::unique_ptr<ReportingPersister> Create(ReportingContext* context);
 
   virtual ~ReportingPersister();
 };
 
 }  // namespace net
 
 #endif  // NET_REPORTING_REPORTING_PERSISTER_H_