Standardize usage of virtual/override/final specifiers.

net/quic/quic_network_transaction_unittest.cc

 // Copyright (c) 2012 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 <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/stl_util.h"
@@ skipping 103 matching lines @@
         auth_handler_factory_(
             HttpAuthHandlerFactory::CreateDefault(&host_resolver_)),
         random_generator_(0),
         hanging_data_(nullptr, 0, nullptr, 0) {
     request_.method = "GET";
     request_.url = GURL("http://www.google.com/");
     request_.load_flags = 0;
     clock_->AdvanceTime(QuicTime::Delta::FromMilliseconds(20));
   }
 
-  virtual void SetUp() {
+  void SetUp() override {
     NetworkChangeNotifier::NotifyObserversOfIPAddressChangeForTests();
     base::MessageLoop::current()->RunUntilIdle();
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     NetworkChangeNotifier::NotifyObserversOfIPAddressChangeForTests();
     // Empty the current queue.
     base::MessageLoop::current()->RunUntilIdle();
     PlatformTest::TearDown();
     NetworkChangeNotifier::NotifyObserversOfIPAddressChangeForTests();
     base::MessageLoop::current()->RunUntilIdle();
   }
 
   scoped_ptr<QuicEncryptedPacket> ConstructConnectionClosePacket(
       QuicPacketSequenceNumber num) {
@@ skipping 892 matching lines @@
                          nullptr,
                          net_log_.bound());
 
   CreateSessionWithNextProtos();
   AddQuicAlternateProtocolMapping(MockCryptoClientStream::ZERO_RTT);
   SendRequestAndExpectHttpResponse("hello world");
 }
 
 }  // namespace test
 }  // namespace net