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

remoting/protocol/negotiating_authenticator_unittest.cc

Index: remoting/protocol/negotiating_authenticator_unittest.cc
diff --git a/remoting/protocol/negotiating_authenticator_unittest.cc b/remoting/protocol/negotiating_authenticator_unittest.cc
index 3e120323be1468af9da4783dcdf694bbe8a2b3a2..cf3e96adb116cc3b4b751012a14a3368a39fd631 100644
--- a/remoting/protocol/negotiating_authenticator_unittest.cc
+++ b/remoting/protocol/negotiating_authenticator_unittest.cc
@@ -97,7 +97,7 @@ class NegotiatingAuthenticatorTest : public AuthenticatorTestBase {
 
   void CreatePairingRegistry(bool with_paired_client) {
     pairing_registry_ = new SynchronousPairingRegistry(
-        base::WrapUnique(new MockPairingRegistryDelegate()));
+        base::MakeUnique<MockPairingRegistryDelegate>());
     if (with_paired_client) {
       PairingRegistry::Pairing pairing(
           base::Time(), kTestClientName, kTestClientId, kTestPairedSecret);