Deprecate NonThreadSafe in remoting in favor of SequenceChecker.

remoting/signaling/log_to_server.h

Index: remoting/signaling/log_to_server.h
diff --git a/remoting/signaling/log_to_server.h b/remoting/signaling/log_to_server.h
index 6986c81631cf5301b07741e93b4bc1d98122411b..27462681df6101fa815940164ed1a009fe110eab 100644
--- a/remoting/signaling/log_to_server.h
+++ b/remoting/signaling/log_to_server.h
@@ -10,7 +10,7 @@
 #include <string>
 
 #include "base/macros.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "remoting/signaling/server_log_entry.h"
 #include "remoting/signaling/signal_strategy.h"
 
@@ -25,8 +25,7 @@ class IqSender;
 // LogToServer sends log entries to a server.
 // The contents of the log entries are described in server_log_entry.cc.
 // They do not contain any personally identifiable information.
-class LogToServer : public base::NonThreadSafe,
-                    public SignalStrategy::Listener {
+class LogToServer : public SignalStrategy::Listener {
  public:
   LogToServer(ServerLogEntry::Mode mode,
               SignalStrategy* signal_strategy,
@@ -51,6 +50,8 @@ class LogToServer : public base::NonThreadSafe,
 
   std::deque<ServerLogEntry> pending_entries_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(LogToServer);
 };