Deprecate NonThreadSafe in remoting in favor of SequenceChecker.

remoting/host/ipc_host_event_logger.h

Index: remoting/host/ipc_host_event_logger.h
diff --git a/remoting/host/ipc_host_event_logger.h b/remoting/host/ipc_host_event_logger.h
index bf15d5824949bf3c3af4c324a171292f95abbb4f..b292fa454be492ee3d68414a7399ebf925f7dc23 100644
--- a/remoting/host/ipc_host_event_logger.h
+++ b/remoting/host/ipc_host_event_logger.h
@@ -11,7 +11,7 @@
 #include "base/compiler_specific.h"
 #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_event_logger.h"
 #include "remoting/host/host_status_observer.h"
 
@@ -23,10 +23,7 @@ namespace remoting {
 
 class HostStatusMonitor;
 
-class IpcHostEventLogger
-    : public base::NonThreadSafe,
-      public HostEventLogger,
-      public HostStatusObserver {
+class IpcHostEventLogger : public HostEventLogger, public HostStatusObserver {
  public:
   // Initializes the logger. |daemon_channel| must outlive this object.
   IpcHostEventLogger(base::WeakPtr<HostStatusMonitor> monitor,
@@ -50,6 +47,8 @@ class IpcHostEventLogger
 
   base::WeakPtr<HostStatusMonitor> monitor_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(IpcHostEventLogger);
 };