Deprecate NonThreadSafe in remoting in favor of SequenceChecker.

remoting/host/host_status_logger.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_HOST_HOST_STATUS_LOGGER_H_
 #define REMOTING_HOST_HOST_STATUS_LOGGER_H_
 
 #include <map>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "remoting/host/host_status_observer.h"
 #include "remoting/protocol/transport.h"
 #include "remoting/signaling/log_to_server.h"
 
 namespace remoting {
 
 class HostStatusMonitor;
 
 // HostStatusLogger sends host log entries to a server.
 // The contents of the log entries are described in server_log_entry_host.cc.
 // They do not contain any personally identifiable information.
-class HostStatusLogger : public HostStatusObserver,
-                         public base::NonThreadSafe {
+class HostStatusLogger : public HostStatusObserver {
  public:
   HostStatusLogger(base::WeakPtr<HostStatusMonitor> monitor,
                   ServerLogEntry::Mode mode,
                   SignalStrategy* signal_strategy,
                   const std::string& directory_bot_jid);
   ~HostStatusLogger() override;
 
   // Logs a session state change. Currently, this is either
   // connection or disconnection.
   void LogSessionStateChange(const std::string& jid, bool connected);
@@ skipping 11 matching lines @@
  private:
   LogToServer log_to_server_;
 
   base::WeakPtr<HostStatusMonitor> monitor_;
 
   // A map from client JID to the route type of that client's connection to
   // this host.
   std::map<std::string, protocol::TransportRoute::RouteType>
       connection_route_type_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(HostStatusLogger);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_HOST_STATUS_LOGGER_H_