Reporting: Wrap existing classes in context.

net/reporting/reporting_cache.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_cache.h"
 
 #include <map>
 #include <memory>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/memory/ptr_util.h"
 #include "base/stl_util.h"
 #include "base/time/time.h"
 #include "net/reporting/reporting_client.h"
 #include "net/reporting/reporting_report.h"
 #include "url/gurl.h"
 
 namespace net {
 
-ReportingCache::ReportingCache() {}
+ReportingCache::ReportingCache(ReportingContext* context) : context_(context) {
+  DCHECK(context_);
+}
 
 ReportingCache::~ReportingCache() {}
 
 void ReportingCache::AddReport(const GURL& url,
                                const std::string& group,
                                const std::string& type,
                                std::unique_ptr<const base::Value> body,
                                base::TimeTicks queued,
                                int attempts) {
   auto report = base::MakeUnique<ReportingReport>(
@@ skipping 128 matching lines @@
 void ReportingCache::RemoveClientsForEndpoint(const GURL& endpoint) {
   for (auto& it : clients_)
     it.second.erase(endpoint);
 }
 
 void ReportingCache::RemoveAllClients() {
   clients_.clear();
 }
 
 }  // namespace net