Update from chromium https://crrev.com/301725/

net/quic/crypto/local_strike_register_client_test.cc

Index: net/quic/crypto/local_strike_register_client_test.cc
diff --git a/net/quic/crypto/local_strike_register_client_test.cc b/net/quic/crypto/local_strike_register_client_test.cc
index a2c3ce2ee9f30101ddbdb9069ee8fe159519323a..b713c10aaf99afdda4a9c7ed2f94794937808fd3 100644
--- a/net/quic/crypto/local_strike_register_client_test.cc
+++ b/net/quic/crypto/local_strike_register_client_test.cc
@@ -60,7 +60,7 @@ class LocalStrikeRegisterClientTest : public ::testing::Test {
   LocalStrikeRegisterClientTest() {
   }
 
-  virtual void SetUp() {
+  void SetUp() override {
     strike_register_.reset(new LocalStrikeRegisterClient(
         kMaxEntries, kCurrentTimeExternalSecs, kWindowSecs, kOrbit,
         net::StrikeRegister::NO_STARTUP_PERIOD_NEEDED));