replace OVERRIDE and FINAL with override and final in remoting/

remoting/host/posix/signal_handler.cc

Index: remoting/host/posix/signal_handler.cc
diff --git a/remoting/host/posix/signal_handler.cc b/remoting/host/posix/signal_handler.cc
index 05364f89ca6c91dd49565cf75678e52f8509543b..7c5e96abc88b183d50205555c0ccba2148d9a721 100644
--- a/remoting/host/posix/signal_handler.cc
+++ b/remoting/host/posix/signal_handler.cc
@@ -27,8 +27,8 @@ class SignalListener : public base::MessagePumpLibevent::Watcher {
 
   void AddSignalHandler(int signal, const SignalHandler& handler);
 
-  virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE;
-  virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE {}
+  virtual void OnFileCanReadWithoutBlocking(int fd) override;
+  virtual void OnFileCanWriteWithoutBlocking(int fd) override {}
 
   // WatchFileDescriptor needs a controller through which the operation can be
   // canceled. We don't use it, but this is as good a place as any to store it.