Convert //chrome/installer from scoped_ptr to std::unique_ptr

chrome/installer/util/google_update_settings.cc

Index: chrome/installer/util/google_update_settings.cc
diff --git a/chrome/installer/util/google_update_settings.cc b/chrome/installer/util/google_update_settings.cc
index 3e1767723298baa3b3e5ccf7dbe47de8ebffef44..5fdc0c1451d60e25497c6134121df37dc466f3be 100644
--- a/chrome/installer/util/google_update_settings.cc
+++ b/chrome/installer/util/google_update_settings.cc
@@ -311,14 +311,15 @@ bool GoogleUpdateSettings::SetCollectStatsConsentAtLevel(bool system_install,
   return (result == ERROR_SUCCESS);
 }
 
-scoped_ptr<metrics::ClientInfo> GoogleUpdateSettings::LoadMetricsClientInfo() {
+std::unique_ptr<metrics::ClientInfo>
+GoogleUpdateSettings::LoadMetricsClientInfo() {
   base::string16 client_id_16;
   if (!ReadGoogleUpdateStrKey(google_update::kRegMetricsId, &client_id_16) ||
       client_id_16.empty()) {
-    return scoped_ptr<metrics::ClientInfo>();
+    return std::unique_ptr<metrics::ClientInfo>();
   }
 
-  scoped_ptr<metrics::ClientInfo> client_info(new metrics::ClientInfo);
+  std::unique_ptr<metrics::ClientInfo> client_info(new metrics::ClientInfo);
   client_info->client_id = base::UTF16ToUTF8(client_id_16);
 
   base::string16 installation_date_str;