replace OVERRIDE and FINAL with override and final in net/

net/quic/crypto/curve25519_key_exchange.h

Index: net/quic/crypto/curve25519_key_exchange.h
diff --git a/net/quic/crypto/curve25519_key_exchange.h b/net/quic/crypto/curve25519_key_exchange.h
index 93288f6555cf27b66362733ba1945a1fa56f1680..310c61432a101c9492af7a7475d5e78380927997 100644
--- a/net/quic/crypto/curve25519_key_exchange.h
+++ b/net/quic/crypto/curve25519_key_exchange.h
@@ -31,11 +31,11 @@ class NET_EXPORT_PRIVATE Curve25519KeyExchange : public KeyExchange {
   static std::string NewPrivateKey(QuicRandom* rand);
 
   // KeyExchange interface.
-  virtual KeyExchange* NewKeyPair(QuicRandom* rand) const OVERRIDE;
+  virtual KeyExchange* NewKeyPair(QuicRandom* rand) const override;
   virtual bool CalculateSharedKey(const base::StringPiece& peer_public_value,
-                                  std::string* shared_key) const OVERRIDE;
-  virtual base::StringPiece public_value() const OVERRIDE;
-  virtual QuicTag tag() const OVERRIDE;
+                                  std::string* shared_key) const override;
+  virtual base::StringPiece public_value() const override;
+  virtual QuicTag tag() const override;
 
  private:
   Curve25519KeyExchange();