Replace incident type handlers with implementations of Incident.

chrome/browser/safe_browsing/incident_reporting/omnibox_interaction_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/omnibox_interaction_incident.h"
+
+#include "base/logging.h"
+#include "chrome/common/safe_browsing/csd.pb.h"
+
+namespace safe_browsing {
+
+OmniboxInteractionIncident::OmniboxInteractionIncident(
+    scoped_ptr<ClientIncidentReport_IncidentData_OmniboxInteractionIncident>
+        omnibox_interaction_incident) {
+  DCHECK(omnibox_interaction_incident);
+  DCHECK(omnibox_interaction_incident->has_origin());
+  payload()->set_allocated_omnibox_interaction(
+      omnibox_interaction_incident.release());
+}
+
+OmniboxInteractionIncident::~OmniboxInteractionIncident() {
+}
+
+IncidentType OmniboxInteractionIncident::GetType() const {
+  return IncidentType::OMNIBOX_INTERACTION;
+}
+
+std::string OmniboxInteractionIncident::GetKey() const {
+  // Return a constant, as only one kind of suspicious interaction is detected.
+  return "1";
+}
+
+uint32_t OmniboxInteractionIncident::ComputeDigest() const {
+  // Return a constant (independent of the incident's payload) so that only the
+  // first suspicious interaction is reported.
+  return 1u;
+}
+
+}  // namespace safe_browsing