replace OVERRIDE and FINAL with override and final in device/

device/serial/data_sender.h

Index: device/serial/data_sender.h
diff --git a/device/serial/data_sender.h b/device/serial/data_sender.h
index ab21db448d3991453cc3cd034718b33d05413c4b..6e5c89e85c0b587643b31f4fc006032844222729 100644
--- a/device/serial/data_sender.h
+++ b/device/serial/data_sender.h
@@ -53,14 +53,14 @@ class DataSender : public serial::DataSinkClient, public mojo::ErrorHandler {
   class PendingSend;
 
   // serial::DataSinkClient overrides.
-  virtual void ReportBytesSent(uint32_t bytes_sent) OVERRIDE;
+  virtual void ReportBytesSent(uint32_t bytes_sent) override;
   virtual void ReportBytesSentAndError(
       uint32_t bytes_sent,
       int32_t error,
-      const mojo::Callback<void(uint32_t)>& callback) OVERRIDE;
+      const mojo::Callback<void(uint32_t)>& callback) override;
 
   // mojo::ErrorHandler override.
-  virtual void OnConnectionError() OVERRIDE;
+  virtual void OnConnectionError() override;
 
   // Copies data from |pending_sends_| into the data pipe and starts |waiter_|
   // waiting if the pipe is full. When a PendingSend in |pending_sends_| has