Reporting: Implement browsing data remover.

net/reporting/reporting_browsing_data_remover.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_browsing_data_remover.h"
+
+#include <vector>
+
+#include "net/reporting/reporting_cache.h"
+#include "net/reporting/reporting_context.h"
+#include "net/reporting/reporting_report.h"
+
+namespace net {
+
+// static
+void ReportingBrowsingDataRemover::RemoveBrowsingData(
+    ReportingContext* context,
+    int data_type_mask,
+    base::Callback<bool(const GURL&)> origin_filter) {
+  ReportingCache* cache = context->cache();
+  bool remove_reports = !!(data_type_mask & DATA_TYPE_REPORTS);

[shivanisha, 2017/04/07 16:42:48]

Why the 2 negate signs?

+  bool remove_clients = !!(data_type_mask & DATA_TYPE_CLIENTS);
+
+  if (origin_filter.is_null()) {
+    if (remove_reports)
+      cache->RemoveAllReports();
+    if (remove_clients)
+      cache->RemoveAllClients();
+    return;
+  }
+
+  if (remove_reports) {
+    std::vector<const ReportingReport*> all_reports;
+    cache->GetReports(&all_reports);
+
+    std::vector<const ReportingReport*> reports_to_remove;
+    for (const ReportingReport* report : all_reports) {
+      if (origin_filter.Run(report->url))
+        reports_to_remove.push_back(report);
+    }
+
+    cache->RemoveReports(reports_to_remove);
+  }
+
+  if (remove_clients) {
+    std::vector<const ReportingClient*> all_clients;
+    cache->GetClients(&all_clients);
+
+    std::vector<const ReportingClient*> clients_to_remove;
+    for (const ReportingClient* client : all_clients) {
+      if (origin_filter.Run(client->origin.GetURL()))
+        clients_to_remove.push_back(client);
+    }
+
+    cache->RemoveClients(clients_to_remove);
+  }
+}
+
+}  // namespace net