extensions::ExtensionRegistry::Get(profile_)->enabled_extensions();
for (extensions::ExtensionSet::const_iterator i = extension_set.begin();
i != extension_set.end(); ++i) {
extensions::ExtensionRegistry::Get(profile_)->enabled_extensions();
for (extensions::ExtensionSet::const_iterator i = extension_set.begin();
i != extension_set.end(); ++i) {