Deprecate NonThreadSafe in remoting in favor of SequenceChecker.

remoting/host/win/rdp_client.cc

Index: remoting/host/win/rdp_client.cc
diff --git a/remoting/host/win/rdp_client.cc b/remoting/host/win/rdp_client.cc
index 81ec5b9e3ea41253b0fee4981d3eea3b99dff204..e7b57d2f68ef39e4ac97dbc7b1de258d9d15d700 100644
--- a/remoting/host/win/rdp_client.cc
+++ b/remoting/host/win/rdp_client.cc
@@ -103,19 +103,19 @@ RdpClient::RdpClient(
 }
 
 RdpClient::~RdpClient() {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
 
   core_->Disconnect();
 }
 
 void RdpClient::InjectSas() {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
 
   core_->InjectSas();
 }
 
 void RdpClient::ChangeResolution(const ScreenResolution& resolution) {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
 
   core_->ChangeResolution(resolution);
 }