Add rappor::SampleString for consisntecy with domain+registry case

components/rappor/rappor_utils.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 "components/rappor/rappor_utils.h"
 
 #include "components/rappor/rappor_service.h"
 #include "net/base/net_util.h"
 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 #include "url/gurl.h"
 
 namespace rappor {
 
+void SampleString(RapporService* rappor_service,
+                  const std::string& metric,
+                  RapporType type,
+                  const std::string& sample) {
+  if (!rappor_service)
+    return;
+  rappor_service->RecordSample(metric, type, sample);
+}
+
 std::string GetDomainAndRegistrySampleFromGURL(const GURL& gurl) {
   if (gurl.SchemeIsHTTPOrHTTPS()) {
     if (net::IsLocalhost(gurl.host()))
       return "localhost";
     if (gurl.HostIsIPAddress())
       return "ip_address";
     return net::registry_controlled_domains::GetDomainAndRegistry(
         gurl, net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES);
   }
   if (gurl.SchemeIsFile())
     return gurl.scheme() + "://";
   return gurl.scheme() + "://" + gurl.host();
 }
 
 void SampleDomainAndRegistryFromGURL(RapporService* rappor_service,
                                      const std::string& metric,
                                      const GURL& gurl) {
   if (!rappor_service)
     return;
   rappor_service->RecordSample(
       metric,
       rappor::ETLD_PLUS_ONE_RAPPOR_TYPE,
       GetDomainAndRegistrySampleFromGURL(gurl));
 }
 
 }  // namespace rappor