Remove calls to deprecated MessageLoop methods in remoting.

remoting/protocol/v2_authenticator_unittest.cc

Index: remoting/protocol/v2_authenticator_unittest.cc
diff --git a/remoting/protocol/v2_authenticator_unittest.cc b/remoting/protocol/v2_authenticator_unittest.cc
index 9b91446a60162556f6411046d652139f496e12a3..1315ad3b9df0ebc244a8767ff9803ea66752348c 100644
--- a/remoting/protocol/v2_authenticator_unittest.cc
+++ b/remoting/protocol/v2_authenticator_unittest.cc
@@ -6,6 +6,7 @@
 
 #include "base/bind.h"
 #include "base/macros.h"
+#include "base/run_loop.h"
 #include "net/base/net_errors.h"
 #include "remoting/base/rsa_key_pair.h"
 #include "remoting/protocol/authenticator_test_base.h"
@@ -67,7 +68,7 @@ TEST_F(V2AuthenticatorTest, SuccessfulAuth) {
                                 kMessageSize, kMessages);
 
   tester.Start();
-  message_loop_.Run();
+  base::RunLoop().Run();
   tester.CheckResults();
 }