Add OVERRIDE to remoting/.

remoting/host/local_input_monitor_thread_linux.h

Index: remoting/host/local_input_monitor_thread_linux.h
diff --git a/remoting/host/local_input_monitor_thread_linux.h b/remoting/host/local_input_monitor_thread_linux.h
index 567882c8683edc934c7995a3549973fa8cdf8106..d30e7c4b8992cf65beaa1fdb2a328b2dbfe1a88f 100644
--- a/remoting/host/local_input_monitor_thread_linux.h
+++ b/remoting/host/local_input_monitor_thread_linux.h
@@ -5,6 +5,7 @@
 #ifndef LOCAL_INPUT_MONITOR_THREAD_LINUX_H_
 #define LOCAL_INPUT_MONITOR_THREAD_LINUX_H_
 
+#include "base/compiler_specific.h"
 #include "base/threading/simple_thread.h"
 #include "third_party/skia/include/core/SkPoint.h"
 
@@ -20,7 +21,7 @@ class LocalInputMonitorThread : public base::SimpleThread {
   virtual ~LocalInputMonitorThread();
 
   void Stop();
-  virtual void Run();
+  virtual void Run() OVERRIDE;
 
   void LocalMouseMoved(const SkIPoint& pos);
   void LocalKeyPressed(int key_code, bool down);