Re-write many calls to WrapUnique() with MakeUnique()

remoting/host/pam_authorization_factory_posix.cc

Index: remoting/host/pam_authorization_factory_posix.cc
diff --git a/remoting/host/pam_authorization_factory_posix.cc b/remoting/host/pam_authorization_factory_posix.cc
index 40c1c309fcc82399b1e8dcf4c88fbd317d27274f..35da4cd38cc804bdd8e588c394dfcbd224cecb6d 100644
--- a/remoting/host/pam_authorization_factory_posix.cc
+++ b/remoting/host/pam_authorization_factory_posix.cc
@@ -173,7 +173,7 @@ PamAuthorizationFactory::CreateAuthenticator(const std::string& local_jid,
                                              const std::string& remote_jid) {
   std::unique_ptr<protocol::Authenticator> authenticator(
       underlying_->CreateAuthenticator(local_jid, remote_jid));
-  return base::WrapUnique(new PamAuthorizer(std::move(authenticator)));
+  return base::MakeUnique<PamAuthorizer>(std::move(authenticator));
 }
 
 }  // namespace remoting