Standardize usage of virtual/override/final in net/

net/quic/crypto/crypto_framer_test.cc

Index: net/quic/crypto/crypto_framer_test.cc
diff --git a/net/quic/crypto/crypto_framer_test.cc b/net/quic/crypto/crypto_framer_test.cc
index f9ea55db6302a93735bd7205cd1fbc5807085a55..ce815a8a28f9cb5d5fa987b63861793515dc2c5f 100644
--- a/net/quic/crypto/crypto_framer_test.cc
+++ b/net/quic/crypto/crypto_framer_test.cc
@@ -33,13 +33,12 @@ class TestCryptoVisitor : public ::net::CryptoFramerVisitorInterface {
  public:
   TestCryptoVisitor() : error_count_(0) {}
 
-  virtual void OnError(CryptoFramer* framer) override {
+  void OnError(CryptoFramer* framer) override {
     DLOG(ERROR) << "CryptoFramer Error: " << framer->error();
     ++error_count_;
   }
 
-  virtual void OnHandshakeMessage(
-      const CryptoHandshakeMessage& message) override {
+  void OnHandshakeMessage(const CryptoHandshakeMessage& message) override {
     messages_.push_back(message);
   }