Remove calls to deprecated MessageLoop methods on Windows and Linux.

remoting/protocol/ice_transport_unittest.cc

Index: remoting/protocol/ice_transport_unittest.cc
diff --git a/remoting/protocol/ice_transport_unittest.cc b/remoting/protocol/ice_transport_unittest.cc
index a3ee442a39e48b4a8320cbe5c2a0428474a9ad9d..20021eba85acc639c3301e3205d69f7eb53dd734 100644
--- a/remoting/protocol/ice_transport_unittest.cc
+++ b/remoting/protocol/ice_transport_unittest.cc
@@ -95,7 +95,7 @@ class IceTransportTest : public testing::Test {
     host_message_pipe_.reset();
     client_transport_.reset();
     host_transport_.reset();
-    message_loop_.RunUntilIdle();
+    base::RunLoop().RunUntilIdle();
   }
 
   void ProcessTransportInfo(std::unique_ptr<IceTransport>* target_transport,