[Sync] Move //components/sync to the syncer namespace, take 2.

components/sync/driver/sync_util.cc

Index: components/sync/driver/sync_util.cc
diff --git a/components/sync/driver/sync_util.cc b/components/sync/driver/sync_util.cc
index b3535c50558d29d3368d2d261dc769befd0460d2..6b812813265aaa3816c3b0099abdbb25853e3371 100644
--- a/components/sync/driver/sync_util.cc
+++ b/components/sync/driver/sync_util.cc
@@ -45,6 +45,7 @@ std::string GetSystemString(bool is_tablet) {
 
 }  // namespace
 
+namespace syncer {
 namespace internal {
 
 const char* kSyncServerUrl = "https://clients4.google.com/chrome-sync";
@@ -104,3 +105,5 @@ std::string MakeUserAgentForSync(version_info::Channel channel,
   std::string system = GetSystemString(is_tablet);
   return internal::FormatUserAgentForSync(system, channel);
 }
+
+}  // namespace syncer