Add domain request detection to incident reporting service.

chrome/browser/safe_browsing/incident_reporting/resource_request_incident.cc

+// Copyright 2015 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 "chrome/browser/safe_browsing/incident_reporting/resource_request_incident.h"
+
+#include "base/logging.h"
+#include "chrome/browser/safe_browsing/incident_reporting/incident_handler_util.h"
+#include "chrome/common/safe_browsing/csd.pb.h"
+
+namespace safe_browsing {
+
+ResourceRequestIncident::ResourceRequestIncident(
+    scoped_ptr<ClientIncidentReport_IncidentData_ResourceRequestIncident>
+        script_request_incident) {
+  DCHECK(script_request_incident);
+  DCHECK(script_request_incident->has_digest());
+  payload()->set_allocated_resource_request(script_request_incident.release());
+}
+
+ResourceRequestIncident::~ResourceRequestIncident() {
+}
+
+IncidentType ResourceRequestIncident::GetType() const {
+  return IncidentType::RESOURCE_REQUEST;
+}
+
+std::string ResourceRequestIncident::GetKey() const {
+  // Use a static key in addition to a fixed digest below to ensure that only

[grt (UTC plus 2), 2015/03/27 14:17:43]

please update the comment:
  // Use a static key per resource request type in addition to a fixed digest
  // below to ensure that only one incident per user (and incident type) is
  // reported.

[romanl, 2015/03/30 14:46:50]

Done.

+  // one incident per user (and incident type) is reported.
+  return payload()->resource_request().type() ==
+                 ClientIncidentReport_IncidentData_ResourceRequestIncident::
+                     TYPE_SCRIPT
+             ? "script_request_incident"
+             : "domain_request_incident";
+}
+
+uint32_t ResourceRequestIncident::ComputeDigest() const {
+  // Return a constant in addition to a fixed key above to ensure that only one

[grt (UTC plus 2), 2015/03/27 14:17:43]

  // Return a constant in addition to a fixed key per resource request type
  // above to ensure that only one incident per user is reported.

[romanl, 2015/03/30 14:46:50]

Done.

+  // incident per user is reported.
+  return 42;
+}
+
+}  // namespace safe_browsing