Use override instead of virtual..override in ./net/quic/... and

net/quic/quic_sent_packet_manager_test.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/quic_sent_packet_manager.h"
 
 #include "base/stl_util.h"
 #include "net/quic/quic_flags.h"
 #include "net/quic/test_tools/quic_config_peer.h"
 #include "net/quic/test_tools/quic_sent_packet_manager_peer.h"
@@ skipping 46 matching lines @@
 
     EXPECT_CALL(*send_algorithm_, HasReliableBandwidthEstimate())
         .Times(AnyNumber());
     EXPECT_CALL(*send_algorithm_, BandwidthEstimate())
         .Times(AnyNumber())
         .WillRepeatedly(Return(QuicBandwidth::Zero()));
     EXPECT_CALL(*send_algorithm_, InSlowStart()).Times(AnyNumber());
     EXPECT_CALL(*send_algorithm_, InRecovery()).Times(AnyNumber());
   }
 
-  virtual ~QuicSentPacketManagerTest() override {
-    STLDeleteElements(&packets_);
-  }
+  ~QuicSentPacketManagerTest() override { STLDeleteElements(&packets_); }
 
   QuicByteCount BytesInFlight() {
     return QuicSentPacketManagerPeer::GetBytesInFlight(&manager_);
   }
   void VerifyUnackedPackets(QuicPacketSequenceNumber* packets,
                             size_t num_packets) {
     if (num_packets == 0) {
       EXPECT_FALSE(manager_.HasUnackedPackets());
       EXPECT_EQ(0u, QuicSentPacketManagerPeer::GetNumRetransmittablePackets(
           &manager_));
@@ skipping 1369 matching lines @@
   EXPECT_CALL(*network_change_visitor_, OnCongestionWindowChange());
   manager_.SetFromConfig(config);
 
   EXPECT_EQ(0, manager_.GetRttStats()->smoothed_rtt().ToMicroseconds());
   EXPECT_EQ(initial_rtt_us, manager_.GetRttStats()->initial_rtt_us());
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net