Add more Rappor metrics

components/rappor/rappor_utils.h

+// Copyright 2014 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 COMPONENTS_RAPPOR_RAPPOR_UTILS_H_
+#define COMPONENTS_RAPPOR_RAPPOR_UTILS_H_
+
+#include <string>
+
+class GURL;
+
+namespace rappor {
+
+class RapporService;
+
+// Record the ETLD+1 of a url to a Rappor metric.
+// If the service is NULL, this becomes a no-op.
+void SampleDomainAndRegistryFromGURL(RapporService* service,
+                                     const std::string& metric,
+                                     const GURL& gurl);
+
+// Record the ETLD+1 of a host to a Rappor metric.
+// If the service is NULL, this becomes a no-op.
+void SampleDomainAndRegistryFromHost(RapporService* service,
+                                     const std::string& metric,
+                                     const std::string& host);
+
+}  // namespace rappor
+
+#endif  // COMPONENTS_RAPPOR_RAPPOR_UTILS_H_